♚ Peter IV (Theodore-Peter)

Peter IV, born Theodore and known in Byzantine sources as Petros and in Latin accounts as Kalopetrus, was the eldest of the three Asen brothers who restored Bulgarian rule at the end of the twelfth century. His younger brothers were Ivan Asen I and Kaloyan, and the known sibling group also included two sisters whose names are not preserved here. The brothers are associated with the rising aristocracy of Paristrion, the lands between the Balkan Mountains and the lower Danube, and with the district of Tărnovo, where they presumably possessed a local power base. Nothing secure is known of Theodore's birth, parents, education, or career before the revolt; the sources first illuminate him only when he and Ivan Asen challenged Byzantine authority in 1185.

The immediate crisis arose in the first year of Emperor Isaac II Angelos. An extraordinary levy connected with the emperor's marriage intensified resentment against Byzantine fiscal and economic burdens. According to Niketas Choniates, Theodore and Ivan Asen appeared before Isaac seeking imperial service and a grant of land, requests that have been interpreted either as a bid for military employment or as an attempt to enter the stratiotic or pronoia-holding elite. They were refused, and the more outspoken Ivan Asen was struck in the face on the order of the sebastokrator John. Choniates and Theodore Skoutariotes made this humiliation a direct prelude to rebellion, while also acknowledging that the people whom they call Mysians were already contemplating resistance and were stirred to action by Asen and Peter.

The brothers transformed discontent into a movement for restored statehood by giving it a powerful religious interpretation. On 24 August 1185 the Sicilian Normans captured Thessalonica, and the destruction of the empire's second city appeared to demonstrate that divine protection had deserted Byzantium. Theodore and Ivan Asen promoted the belief that Saint Demetrius, the martyr and traditional protector of Thessalonica, had abandoned the Romans and come to aid the Bulgarians. They built a church or ‘house of prayer’ dedicated to him at Tărnovo, while Theodore Balsamon attests the presence there of an icon of the saint, reportedly associated with the devastated city. Choniates describes this propaganda with hostility, but his narrative shows how the cult of Saint Demetrius supplied the uprising with providential legitimacy and a sacred centre.

The revolt began in late 1185, and by the end of the year insurgent forces were crossing the Balkan Mountains into Thrace, plundering and recruiting. Theodore then assumed the insignia of supreme rule: Choniates says that he crowned himself with a golden wreath and put on purple footwear, while Skoutariotes adds that he called himself ‘tsar of the Bulgarians’. He adopted the regnal name Peter in conscious imitation of the canonized tenth-century ruler Peter I, thereby linking the restored monarchy to the First Bulgarian Empire. The chronology is not entirely uniform. John V. A. Fine places the proclamation amid the successes of late 1185, whereas the Bulgarian narrative reconstruction places the solemn act at Tărnovo in the spring of 1186. Peter's reign is conventionally counted from 1185, but an initial acclamation and a more formal coronation may account for the differing presentations.

The insurgents next moved against Preslav, the former capital associated above all with Tsar Symeon, but its walls and Byzantine garrison held. Choniates says that they judged a siege unsafe and passed on across the Haemus. The attempt nevertheless proclaimed that this was not merely a tax riot but a renovatio of the Bulgarian imperial tradition. The brothers established themselves instead at naturally defensible Tărnovo and strengthened it. Its status as capital in 1186 is partly a scholarly reconstruction: Choniates first names Tărnovo explicitly in connection with events of 1196, and George Akropolites later calls it Strinavos and describes it as a small town, but the identification of Choniates' church of Saint Demetrius with the surviving Tărnovo foundation strongly supports the city's early central role.

The monarchy was accompanied by the reconstruction of an autonomous ecclesiastical hierarchy. Evidence supplied by a later letter of Archbishop Basil to Pope Innocent III and by Archbishop Demetrios Chomatenos of Ohrid indicates that the metropolitan of Vidin and two other bishops enthroned Basil first as bishop of Tărnovo and then as archbishop of Bulgaria. A formal coronation of Peter followed, completing the principal institutional elements of the restored state: a tsar, a capital, an archbishop, and an emerging apparatus of government. Niketas Choniates is silent about this ecclesiastical settlement, and Basil was not yet a universally recognized patriarch. Nevertheless, the arrangement embodied the Byzantine political principle later expressed in Kaloyan's correspondence that an empire could not stand without a patriarchal or equivalent spiritual head.

At the end of 1185 or in the first days of 1186 Isaac II began the imperial response, and Byzantine campaigns continued through 1188. The ordering of the expeditions led by Isaac himself and by the sebastokrator John Angelos Doukas, the caesar John Kantakouzenos, and Alexios Branas is disputed in modern scholarship; a close reading of Choniates has been used to argue that Isaac personally led the first serious campaign. Choniates records Peter, Asen, and their followers moving toward the Danube, and the brothers sought assistance beyond it. A later reconstruction holds that Peter was readier than Ivan Asen to suspend the war and administer the liberated northern lands in Isaac's name, while Asen remained committed to a renewed offensive. This proposed split is plausible but rests on difficult evidence and should not be treated as a fully documented constitutional settlement.

For 1187 the surviving excerpts isolate no action that can confidently be assigned to Peter personally. The war continued, and in 1188 a treaty was concluded with Byzantium; Kaloyan was subsequently sent to Constantinople as a hostage. The precise clauses are not preserved in the material supplied, so it would be unsafe to claim a formal Byzantine recognition of every Bulgarian title or frontier. The essential result was that the restored polity survived the imperial campaigns. The possibility that Peter reached a temporary accommodation with Isaac while Ivan Asen remained more militant is supported especially by a speech of George Tornikes, although the dating of that speech has itself been disputed, with some scholars placing its composition around 1193 while interpreting its political circumstances as those of 1186.

In 1189 the passage of Frederick I Barbarossa's Third Crusade opened an ambitious diplomatic opportunity. Bulgarian envoys approached the German emperor at Niš and offered assistance against Isaac II. A later embassy at Adrianople promised an army of 40,000 if Frederick would place on Peter's head the ‘imperial crown of the Greek kingdom’, coronam imperialem regni Grecie. The proposal is independently reported in western crusading traditions, including the Historia peregrinorum and Ansbert, which present Peter as ruler and record that his followers called him emperor of the Greeks. The offer was not simply a request for local recognition: it expressed a programme comparable to the pax Symeonica, in which restored Bulgaria aspired to replace or dominate Byzantium. No agreement conferring the requested crown resulted from these negotiations.

In 1190 Isaac II suffered a major defeat in the Tryavna Pass. The chronological source lists this as the rout of the emperor, but the surviving narratives emphasize Ivan Asen's operational leadership rather than Peter's personal command; Peter should therefore not be invented as the battlefield commander. The victory nevertheless belonged to the dual monarchy over which he retained the senior royal style. The evidence suggests that both brothers could stand together in matters of state, while Ivan Asen increasingly directed military and political action. From approximately 1190–1191 Peter's practical role diminished, and he received an appanage centred on the old capital of Veliki Preslav, retaining the visible insignia and title of tsar. This arrangement created a distinctive form of dual rule rather than a straightforward deposition.

During 1191–1193 the restored kingdom consolidated the gains secured at Tryavna. By 1192–1193 Niketas Choniates could describe it as a kingdom embracing parts of Thrace and Macedonia as well as extensive lands north of the Danube; it possessed both a tsar and an archbishop and no longer faced immediate collapse. Yet the distribution of power remained unequal. The Bulgarian Synodikon and memorial traditions credit Ivan Asen as the first ruler after the restoration who ‘freed the Bulgarian people from Greek slavery’, while the Byzantine and western narratives more readily preserve Peter's formal kingship. This contradiction is best explained by the dual monarchy: Peter embodied dynastic and ceremonial continuity, whereas Ivan Asen became the principal military ruler. Peter's Preslav district was consequently remembered as ‘Peter's land’.

Around 1194 Dobromir Chrysos, or Hrs, illustrates the widening anti-Byzantine front. A Vlach leader with a retinue of about five hundred, he had originally served Byzantium against Peter and Asen, was probably captured by the Bulgarians, and secured release by changing allegiance. The Byzantines, unaware of the change, allowed him to occupy the important fortress of Strumica, from which he extended his authority over neighbouring Bulgarian- and Vlach-inhabited districts. In 1195 Ivan Asen defeated a Byzantine army near Serres. Again, the sources do not establish Peter as commander at Serres, and his contribution must be understood within the shared kingship. That same year Alexios III Angelos displaced Isaac II, a change that sharpened the Byzantine court's use of Bulgarian dissidents and pretenders.

The internal and economic history of Peter's reign is much more obscure than its wars. The revolt itself sprang partly from extraordinary taxation, but no surviving fiscal ordinance, commercial charter, land grant, or administrative law can securely be attributed to Peter. Raiding in Thrace brought booty and recruits, yet this should not be mistaken for a documented economic programme. His Preslav appanage must have supplied a territorial base, but the sources do not describe its revenues or administration. Nor is any coinage securely associated with him: Fine's account places the beginning of Bulgarian royal coin issues under Ivan Asen II, considerably later. Peter's concrete institutional legacy instead lay in the assertion of the tsarist title, the establishment of Tărnovo and Preslav as complementary centres, and the support of an archbishopric capable of sustaining the restored monarchy's ideological independence.

The decisive crisis came in 1196, when Ivanko, emerging from boyar circles apparently encouraged by Byzantium, murdered Ivan Asen I and seized Tărnovo. The conspirators expected Alexios III Angelos to help them subdue all Moesia. Peter, until then largely withdrawn to his Preslav appanage, reacted quickly and besieged the capital, though Choniates' sparse evidence suggests that he did not risk a direct assault. Byzantine intervention proved ineffective or irresolute, and Ivanko and his closest supporters fled to Constantinople. He was later dispatched to Philippopolis, where for a time he resisted Bulgarian and Vlach raids and restored imperial control over several settlements. With Ivanko's departure, in Choniates' formulation, ‘power over the Mysians passed entirely into Peter's hands’, and Peter resumed direct control of Tărnovo.

Peter's independent supremacy in 1196–1197 was brief. Following the established pattern of shared government, he took his youngest brother Kaloyan as ‘helper in state affairs and participant in the government’. Theodore Skoutariotes alone says that Peter and his brother then energetically devastated Roman territory, while Choniates remarks that no Byzantine force opposed Peter. The Bulgarian biographical tradition holds that in 1197 Peter yielded the throne to Kaloyan; the narrative sources more clearly attest Kaloyan's participation in government and his succession after Peter's death, so the exact constitutional sequence remains uncertain. Later in 1197 Peter was killed. Choniates says that he was pierced by the sword of one of his own countrymen, while Fine reports the allegation that the killer was a relative. The assailant's identity and motive are not securely known.

No wife or child of Peter is securely attested, and no marriage alliance can be assigned to him. The evidence explicitly leaves open whether he may have had sons, but none can responsibly be inserted into the genealogy or succession. His practical dynastic policy rested instead on cooperation with his brothers: first the long, if unequal, co-rule with Ivan Asen, and then the association of Kaloyan with government. Kaloyan's earlier service as hostage after the treaty of 1188 had also given the youngest brother experience of Constantinople. There was no clearly documented law of succession in the restored state, and the transfer of authority among the Asen brothers followed a patrimonial and political logic rather than a known rule of primogeniture. Kaloyan succeeded Peter and reigned from 1197 to 1207.

Peter's historical importance exceeds the limited record of his personal actions. By taking the name of Peter I, wearing imperial insignia, and seeking the crown connected with the ‘Greek kingdom’, he personified continuity between the First and Second Bulgarian Empires. Under the regime he founded with Ivan Asen, an initially vulnerable revolt became by 1192–1193 an established kingdom with a capital, an archbishop, territories on both sides of the Balkan range, and ambitions extending into Thrace and Macedonia. His willingness to compromise may have reduced his operational prominence, but it also made possible the flexible dual monarchy that survived repeated Byzantine campaigns and the internal coup of 1196. His recovery of Tărnovo after Ivanko's usurpation preserved the dynasty at its most dangerous moment and enabled Kaloyan to inherit a viable state.

The sources produce sharply different portraits. Niketas Choniates, the best-informed contemporary Byzantine historian, knows Peter as the brother formally crowned and supplies the fullest narrative; Skoutariotes and Ephraim largely follow that tradition. The Historia peregrinorum and Ansbert likewise foreground Kalopetrus in the diplomacy of 1189. Bulgarian commemorative sources, especially the Synodikon and memorial books, instead place Ivan Asen first and either subordinate or omit Peter; the Synodikon preserves the revealing formula ‘Theodore, called Peter’. George Akropolites also suppresses Peter's independent place, while the supplied modern discussions disagree even over the numerical length attributed there to Ivan Asen's reign, making that figure unsafe to use. The speech of George Tornikes, the praise of Michael Choniates, Basil's letter, Chomatenos' testimony, and Balsamon's notice illuminate particular diplomatic or ecclesiastical problems but require cautious dating and interpretation. No contemporary royal charter, inscription, seal, or coin of Peter is presented in these materials. His biography must therefore distinguish consistently between his well-attested ceremonial kingship, his less visible role during Ivan Asen's ascendancy, and the uncertain reconstructions created by later historiography.