Who has the best claim to the title of Roman Emperor?

The question is who had the strongest claim to the title of Roman Emperor in 2019. Although the Roman Empire disappeared centuries ago, several surviving royal families can trace competing claims through conquest, inheritance, marriage, religious recognition, and imperial succession. The presenter argues that no single answer is universally accepted.

Five principal candidates represent different theories of Roman imperial succession. They are Dündar Ali Osman of the Ottoman dynasty, King Felipe VI of Spain, Andrew Romanov of the Russian imperial family, Jean-Christophe Napoléon Bonaparte, and Karl von Habsburg.

Augustus Caesar became the first Roman Emperor in 27 BCE and ruled until 14 CE. His reign established the imperial system from which the subsequent claims ultimately derive.

The Five Good Emperors represented a period of exceptional Roman stability and prosperity. During this era, the empire reached its greatest strength and experienced relative peace across much of its central territory.

The Crisis of the Third Century exposed the difficulty of governing an enormous empire. Emperors frequently rose and fell, sometimes within only a few years, as military and political instability made long-term control increasingly difficult.

Diocletian attempted to stabilize Rome through the Tetrarchy. He divided imperial administration between eastern and western senior emperors, each titled Augustus, and appointed a junior emperor, or Caesar, beneath each. The resulting system had four rulers rather than one.

The Tetrarchy failed to prevent conflict between competing emperors. Civil wars eventually allowed Constantine to defeat his rivals and restore sole imperial authority.

Constantine shifted the imperial capital eastward to Constantinople. The city became known as a New Rome or Second Rome, establishing the eastern Mediterranean as a major center of imperial power.

The empire alternated between unified and divided rule after Constantine. At different times, one emperor governed the entire empire or separate emperors governed its eastern and western territories. Eventually, the division became permanent.

The Western Roman Empire collapsed in 476 CE. Germanic groups crossed the Rhine, Rome itself suffered a major sack, and western imperial authority eventually disappeared.

The Eastern Roman Empire continued after the western collapse. Modern historians commonly call it the Byzantine Empire, but its inhabitants regarded their state as the continuing Roman Empire rather than a separate civilization.

Justinian temporarily restored Roman control over the city of Rome in the sixth century. The presenter places its reconquest around 552 CE and explains that Constantinople remained the imperial capital despite the recovery of the original city.

The eastern empire's survival creates the central dispute over Roman succession. If the Roman state continued operating from Constantinople after 476, the disappearance of its western government did not necessarily end the original empire.

A major succession dispute emerged around 800 CE between Empress Irene and Charlemagne. Irene occupied the eastern imperial throne, while Charlemagne, king of the Franks, had conquered much of Western Europe.

Charlemagne used Irene's position as a female ruler to support his own imperial claim. The pope crowned him emperor in 800, creating a rival western claim to Roman authority.

Charlemagne is commonly associated with the beginning of the Holy Roman imperial tradition. The presenter qualifies this identification by explaining that the Holy Roman Empire developed gradually rather than appearing immediately as a fully established institution.

The Eastern Roman Empire and the western imperial tradition claimed overlapping legitimacy for approximately 650 years. Both presented themselves as successors to ancient Rome, despite governing different territories and developing separate political institutions.

A marriage between Irene and Charlemagne was reportedly proposed. Such a union might have reconciled the competing eastern and western imperial claims, but the marriage never occurred.

The fall of Constantinople in 1453 created another dispute over succession. Ottoman conquest ended the Byzantine government's control of its capital and raised the question of whether Roman imperial authority passed to the conquerors, survived through the imperial family, or disappeared altogether.

The Ottoman dynasty claimed succession through conquest of Constantinople. Because the Ottomans captured the Roman imperial capital and incorporated Byzantine territory, their descendants can argue that they inherited the position previously occupied by the Byzantine emperors.

Sultan Mehmed II adopted the title Kayser-i Rûm, meaning Caesar of Rome. One contributor presents this as evidence that the Ottoman conqueror deliberately claimed the Roman imperial inheritance rather than merely acquiring Byzantine territory.

The Ecumenical Patriarch of Constantinople reportedly recognized Mehmed II as a Roman imperial successor. An Ottoman supporter argues that this religious recognition strengthened Mehmed's claim beyond military conquest alone.

The Ottoman Empire controlled significant territories on both sides of the former Roman Empire. One contributor argues that its reach across Europe and Asia gave it a stronger territorial resemblance to ancient Rome than several rival successor states possessed.

Ottoman marriages into Byzantine noble families supplied an additional dynastic argument. Ottoman rulers married women from Byzantine aristocratic and imperial families, creating blood relationships that supporters regard as relevant to Roman succession.

Orhan, an early Ottoman ruler, married a Byzantine princess. Tarek of Hikma History specifically invokes this marriage to argue that Ottoman connections with Roman imperial bloodlines existed before the conquest of Constantinople.

The difference between Islam and Christianity does not necessarily invalidate the Ottoman claim. The presenter observes that the Roman Empire had already undergone a major religious transformation during its history, so another change of religion could theoretically be compatible with imperial continuity.

The Ottoman Empire lasted approximately another 450 years after capturing Constantinople. Its eventual abolition and Turkey's emergence as a republic ended Ottoman government but did not eliminate the dynasty's surviving descendants.

Dündar Ali Osman is identified as the Ottoman dynastic claimant in 2019. As the person presented as heir to the House of Osman, he represents the theory that Roman imperial legitimacy passed to the Ottoman conquerors.

Dündar Ali Osman was a great-grandson of Sultan Abdulhamid II. An Ottoman supporter connects him directly to the late Ottoman ruling family and notes Abdulhamid's association with the period of violence against Armenians.

Dündar Ali Osman was born in Syria after members of the Ottoman family went into exile. Following the abolition of the empire, some Ottoman princes settled outside Turkey, including in Syria.

Turkey lifted its ban on returning Ottoman family members in 1974. According to one contributor, many relatives returned to Istanbul, but Dündar Ali Osman chose to remain abroad.

The Byzantine imperial family's survival provides a different basis for succession. Instead of recognizing Ottoman conquest as transferring imperial authority, this interpretation follows relatives of the final Byzantine emperor.

Constantine XI was the final reigning Byzantine emperor. He died during the Ottoman conquest of Constantinople in 1453, leaving his surviving relatives as potential representatives of the imperial line.

Constantine XI's brother Thomas escaped to Rome. The presenter argues that Thomas was recognized in Christian Europe as the legitimate eastern imperial successor following Constantinople's fall.

Thomas's son Andreas inherited the family's imperial claim. His position is central to the argument that the Roman imperial title survived the destruction of the Byzantine state.

Andreas reportedly transferred his imperial titles to Ferdinand of Aragon and Isabella of Castile through a will. The presenter treats this testament as the foundation for the Spanish claim and maintains that it constituted a legally binding act under Roman law.

The episode also mentions disputed financial arrangements surrounding the imperial title. According to rumors described by the presenter, Ferdinand and Isabella paid for the inheritance, while the French king had previously paid Andreas for the same title. These allegations complicate the question of whether the title was transferred exclusively and legitimately.

Ferdinand and Isabella provide the starting point for the Spanish succession argument. If Andreas could legally transfer the imperial title through a will, the subsequent heirs of the Spanish monarchs could potentially inherit it.

King Felipe VI of Spain is the presenter’s Spanish candidate. The proposed claim does not depend on controlling Constantinople or possessing an uninterrupted Byzantine bloodline; it rests primarily on succession to the titles inherited by the Spanish monarchy.

Felipe VI was the only reigning monarch among the five principal candidates in 2019. Unlike the other claimants, he already occupied an internationally recognized throne, although not a Roman imperial one.

The Russian claim begins with a Byzantine dynastic marriage. A daughter of Thomas Palaiologos married Ivan III, known as Ivan the Great, establishing a connection between the last Byzantine imperial family and the rulers of Moscow.

Moscow subsequently developed the idea that it was the Third Rome. Russian imperial ideology presented Moscow as the rightful successor to Rome and Constantinople following the disappearance of their imperial governments.

Russian rulers adopted the title Tsar, derived from Caesar. The linguistic connection reinforced their presentation of Russian monarchy as an inheritor of the Roman imperial tradition.

The Russian Orthodox Church strengthened Moscow's claim to eastern Christian leadership. The presenter argues that the Russian church increasingly occupied a central position in Eastern Christianity previously associated with Constantinople.

The Russian Empire eventually disappeared, leaving a disputed succession. Although the imperial family survived, identifying its rightful dynastic head became a separate controversy.

Andrew Romanov is presented as the strongest Russian candidate. The presenter acknowledges disagreement over succession within the Romanov family but selects Andrew as a plausible representative of the Russian imperial inheritance.

One contributor favors the Romanovs because Byzantine blood inheritance outweighs a testamentary transfer. This argument rejects the Spanish claim based on Andreas's will and instead prioritizes the surviving family connection to the eastern emperors.

The same Romanov supporter rejects the Bonaparte and Habsburg claims because the eastern empire continued the original Roman state. From this perspective, western imperial titles originated in a separate political tradition and therefore cannot supersede the Byzantine line.

Russian Orthodoxy provides another argument for Romanov legitimacy. A contributor emphasizes that the Romanovs preserved the Christian tradition associated with the Byzantine Empire, unlike the Muslim Ottoman dynasty.

Another contributor rejects the Romanovs for lacking territorial control and broad recognition. According to this argument, Russian claims to Roman succession were largely self-proclaimed, and Russia did not govern the former Roman imperial heartlands.

A different participant argues that conquest alone does not transfer an extinct monarchy's title. The comparison offered is Prussia's acquisition of Warsaw: control over Polish territory did not automatically make the Prussian monarch the legitimate king of Poland.

This distinction allows a Romanov supporter to reject Ottoman succession without accepting Moscow as literally the Third Rome. The contributor considers the connection through Byzantine imperial bloodlines credible while remaining skeptical of Russia's larger claim to have replaced Rome politically.

The Russian family-tree argument follows Byzantine ancestry through the tsars to Nicholas II. The destruction of the Russian monarchy leaves a complicated network of surviving descendants rather than an obvious reigning successor.

Cypher supports the Romanovs partly because their proposed modern dynastic representative was an American citizen. He also emphasizes the Roman-derived title Tsar and the continuity between the Byzantine Empire and ancient Rome.

Tom Richey supports Andrew Romanov because of the historical appeal of the Three Romes narrative. His preference rests partly on the ability of the Rome–Constantinople–Moscow succession story to connect major periods of European history.

A House of History contributor praises the personal modesty of a Romanov prince. He states that the prince served against Germany in the British Army during World War II and refused promotion to officer, suggesting that someone so reluctant to accept military rank might also reject an imperial title.

The Holy Roman Empire offers an alternative line beginning with Charlemagne. Supporters argue that papal coronation and centuries of recognized western imperial government established a legitimate successor to the Western Roman Empire.

The Holy Roman Empire survived until 1806. The presenter describes it as lasting more than a millennium and outliving the Byzantine Empire by more than 350 years.

Napoleon Bonaparte's military victories brought the Holy Roman Empire to an end. His conquest of much of Europe fundamentally changed the political system that had supported the western imperial title.

Napoleon crowned himself emperor in the presence of the pope. The presenter compares the ceremony with Charlemagne's papal coronation approximately a thousand years earlier, while recognizing that Napoleon's act involved a different relationship with papal authority.

Napoleon's empire was short-lived, as was the later empire of Napoleon III. Nevertheless, the presenter argues that Napoleon's continental power made him one of the closest modern parallels to the emperors of ancient Rome.

Jean-Christophe Napoléon Bonaparte represents the Bonapartist succession claim. He descends from Napoleon's brother Jérôme rather than directly from Napoleon I.

A Bonapartist contributor argues that Napoleon earned imperial legitimacy by replacing the Holy Roman Empire. If the Holy Roman Empire inherited Roman authority, its conqueror could be regarded as the founder of a successor imperial order.

Napoleon's imperial symbolism is cited as evidence of deliberate identification with Rome. A supporter highlights his coronation, laurel wreath imagery, and the Roman eagle standards carried by his troops.

The Bonapartist succession is itself disputed between Jean-Christophe and his father Charles. One participant argues that Charles, Prince Napoléon, possesses the stronger claim under traditional hereditary succession.

Louis, Prince Napoléon, designated his grandson Jean-Christophe as heir rather than his son Charles. The dissenting contributor maintains that Charles's political views influenced this decision and that personal disagreements should not override established dynastic succession.

The dispute exposes a contradiction between inheritance by will and inheritance by blood. The contributor argues that allowing a dynastic head to bypass the traditional father-to-son succession undermines the legitimacy of hereditary monarchy itself.

The Habsburg claim rests on centuries of recognized imperial rule. The House of Habsburg held the Holy Roman imperial title for much of the period beginning in 1440, with relatively few interruptions.

The Austrian Empire preserved a form of Habsburg imperial authority after 1806. The presenter regards the Austrian emperors as successors to the Holy Roman imperial tradition, which continued until the end of World War I.

The presenter describes Habsburg imperial continuity as extending from 1440 to 1912, with limited exceptions. This chronology is used to demonstrate the extraordinary duration of the dynasty's association with imperial government.

Karl von Habsburg is identified as the undisputed head of the Habsburg family. Unlike the contested Russian and Bonapartist successions, the presenter sees no comparable disagreement over which individual represents the Habsburg dynasty.

One contributor argues that international recognition matters more than self-declared imperial ancestry. A claimant becomes politically meaningful when subjects, religious institutions, or other governments acknowledge the title rather than when a family simply announces its entitlement.

The Habsburgs benefit from a long history of papal recognition. Their ancestors repeatedly occupied the Holy Roman imperial throne and received recognition from the papacy, which supporters identify with the western Roman religious tradition.

A Habsburg supporter argues that the dynasty eventually united eastern and western claims. The contributor maintains that the Spanish royal line associated with Andreas's Byzantine testament passed into Habsburg hands, combining the Spanish inheritance with the Holy Roman imperial tradition.

This proposed Habsburg unification is a dynastic argument rather than proof that the Roman Empire was politically restored. It depends on accepting both the western imperial succession and the transfer of Byzantine titles through Spain.

Jasmine from A Long Long Time Ago identifies Irene as the legitimate emperor in the original dispute with Charlemagne. She argues that the Roman state was based in Constantinople, so Charlemagne's conquest of western territories did not automatically entitle him to its existing imperial throne.

Jasmine compares Charlemagne's claim to claiming ownership of a neighboring house because both houses were once a single property. Her argument distinguishes controlling former Roman territory from inheriting the government that actually survived.

Jasmine nevertheless supports Ottoman succession after 1453. She compares Mehmed II's conquest of Constantinople to William the Conqueror's seizure of England in 1066, arguing that successful conquest can establish a legitimate new monarchy.

Another Ottoman supporter rejects the idea that Irene's sex made her imperial position invalid. The contributor views the exclusion of a female ruler as insufficient justification for Charlemagne's competing claim.

Irene's treatment of her son is acknowledged without rejecting her legitimacy. A participant refers to her involvement in blinding her son but maintains that her conduct does not, by itself, invalidate the eastern succession.

Several Ottoman supporters therefore trace legitimacy from Irene's eastern empire through Byzantine rule to the Ottoman conquest. Dündar Ali Osman emerges as their preferred claimant because his family inherited the imperial capital and its surrounding territories.

One participant proposes separate eastern and western Roman emperors instead of a single claimant. Karl von Habsburg would represent the western imperial tradition, while Andrew Romanov would represent the eastern one.

The proposed division reflects concern that neither claimant would be accepted across both former imperial regions. A western emperor asserting authority over Eastern Europe, or an eastern emperor over Western Europe, would face substantial legitimacy problems.

A marriage between Habsburg and Romanov descendants is suggested as a symbolic means of reconciliation. The proposed couple is artist Rostislav Romanov and fashion model Eleonore von Habsburg.

The proposed marriage is acknowledged as impractical because Eleonore was already engaged. The contributor jokingly suggests that reconciling the dynasties through marriage might therefore require another generation.

The presenter also acknowledges possible claims by the pope or an heir to the Italian monarchy. These alternatives are excluded from the principal comparison, which concentrates on five candidates.

The invited contributors collectively favor the Romanovs, with the Ottomans coming second. After hearing more than a dozen opinions, the presenter observes that the Russian candidate would probably win a vote among the participants.

None of the invited contributors selects Felipe VI as the strongest claimant. Despite its distinctive legal argument, the Spanish succession receives no direct endorsement before the presenter reveals his own choice.

The presenter ultimately rejects the other contributors' preferred candidates and chooses Felipe VI. His central argument is that Roman imperial succession should be judged primarily through Roman legal principles rather than conquest, religion, dynastic symbolism, or popular recognition.

Roman law is presented as one of ancient Rome's most consequential legacies. The presenter observes that Roman legal traditions influenced numerous modern legal systems and argues that a Roman court would prioritize legal title over symbolic or cultural connections.

The presenter considers the Byzantine Empire the legally continuous Roman state. Its government survived the fall of the western empire and continued operating even through periods of occupation or interruption in Constantinople.

The Latin Crusaders' temporary control of Constantinople did not, in the presenter's interpretation, terminate Roman legal continuity. He argues that the underlying Roman state and its succession persisted despite the loss of the capital.

The presenter rejects the proposition that Ottoman conquest automatically transferred the Roman state to Mehmed II. He distinguishes the acquisition of territory from the legal inheritance of an existing government.

Ottoman recognition by Christian religious authorities is considered insufficient to establish legal succession. The presenter acknowledges that some religious leaders accepted the Ottoman sultan as a new Roman Caesar but denies that their recognition transferred the Roman state.

The difference between Roman and Ottoman legal systems becomes central to the presenter's reasoning. He argues that the Ottoman government followed a different legal order and therefore did not become the Roman state merely by occupying Constantinople.

The presenter instead argues that Roman imperial authority continued through the exiled Byzantine dynasty. Under this interpretation, the state effectively survived in the person of its legitimate emperor after losing its territory.

Thomas Palaiologos becomes the crucial link between Constantine XI and the subsequent Spanish claim. As the final emperor's surviving brother, Thomas is presented as inheriting imperial legitimacy and carrying it into exile in Rome.

Andreas Palaiologos inherited the claimed imperial title from Thomas. The presenter argues that Andreas could legally dispose of that title through a testament.

Andreas's will is treated as decisive because Roman law recognized legally binding testaments. The presenter considers the transfer to Ferdinand and Isabella more compelling than claims derived from conquest, marriage, ecclesiastical recognition, or imperial symbolism.

The Spanish succession passes from Ferdinand and Isabella into the monarchy of Charles V. Charles inherited the Spanish kingdoms and also became Holy Roman Emperor, bringing two major imperial traditions into his personal rule.

Charles V controlled more of Western Europe than any individual ruler since ancient Roman times, according to the presenter. His extensive territories provide an additional political parallel between the Spanish-Habsburg monarchy and the old Roman Empire.

Charles V divided his imperial inheritance between his son Philip and his brother Ferdinand. Ferdinand inherited the Holy Roman imperial dignity, while Philip inherited the principal Spanish succession.

The presenter considers Philip II the senior heir to the Byzantine title despite Ferdinand receiving the Holy Roman imperial crown. This distinction is essential because it separates the alleged Byzantine inheritance from the better-known western imperial title.

The Spanish monarchy ceased formally asserting the Byzantine imperial title. Nevertheless, the presenter argues that failure to use the title did not automatically extinguish its hereditary ownership.

The Spanish succession subsequently passed between royal houses without breaking the claimed legal inheritance. On the presenter's interpretation, the line extends from Philip II through later Spanish monarchs to Felipe VI.

The presenter concludes that Felipe VI would prevail if a hypothetical Roman court applied his interpretation of succession law. This is a proposed legal interpretation rather than an established judgment or internationally recognized imperial entitlement.

Felipe VI's existing monarchy provides an advantage independent of the testamentary claim. He already exercises the office of king over a country that formed part of the ancient Roman Empire.

Spain's historical royal titulature includes claims associated with former Roman territories. The presenter highlights territories in Italy and Jerusalem among the historical titles connected with the Spanish crown.

Felipe VI is Roman Catholic and speaks a Romance language. The presenter regards these cultural connections as secondary advantages, although he explicitly places greater importance on legal succession.

Felipe VI possesses extensive European royal ancestry. The presenter argues that his family relationships could establish connections with Byzantine rulers and potentially with earlier Roman imperial families, although these relationships are not demonstrated individually in the episode.

The competing claims depend on fundamentally different definitions of legitimate succession. The Ottoman argument emphasizes conquest and territorial continuity; the Russian argument emphasizes dynastic ancestry and Eastern Christianity; the Bonapartist argument emphasizes imperial conquest and replacement; the Habsburg argument emphasizes established western imperial institutions; and the Spanish argument emphasizes testamentary inheritance and legal succession.

The central unresolved issue is whether Roman imperial authority was transferable and, if so, by what mechanism. The competing interpretations require different answers about whether conquest, papal coronation, blood inheritance, legal wills, or the survival of state institutions determines legitimacy.

The episode distinguishes imperial legitimacy from actual political power. None of the five candidates governed a restored Roman Empire in 2019, and the historical arguments do not themselves establish enforceable rights over the territories once ruled by Rome.

The presenter's choice of Felipe VI ultimately depends on accepting several linked propositions. The Byzantine Empire must be regarded as the uninterrupted legal continuation of Rome; imperial authority must have survived through Thomas and Andreas; Andreas must have possessed the power to transfer it by will; and that inheritance must have continued through the Spanish monarchy despite subsequent dynastic changes and the absence of formal claims.

The Romanov and Ottoman preferences demonstrate that historical continuity can support opposing conclusions. A dynasty descended from Byzantine rulers can claim the inheritance through family relationships, while the dynasty that conquered their capital can claim succession through the replacement of imperial government.

The Holy Roman and Napoleonic claims likewise expose competing interpretations of political replacement. If papal coronation established a legitimate western Roman succession, the Habsburgs inherit its institutional tradition; if conquering and replacing an empire transfers legitimacy, Napoleon's destruction of that system strengthens the Bonapartist argument.

The presentation ends without establishing a universally binding answer. Felipe VI is the presenter's preferred legal heir, while the invited historians favor several competing dynasties. The audience is invited to select its preferred candidate, underscoring that the outcome changes according to the succession principles being applied.