♚ Boril

Boril was a member of the Asen dynasty and a nephew of the first three Asen rulers, Peter, Ivan Asen I, and Kaloyan. His mother was their sister, whose personal name is not known from the supplied evidence. Boril’s brother was Strez, while Alexius Slav belonged to the same wider dynastic circle and is described as his cousin. Nothing reliable is known about Boril’s position, offices, estates, or political influence in Tarnovo before October 1207. He therefore enters the record abruptly, amid the crisis caused by Kaloyan’s unexpected death during the campaign against Thessalonica.

Boril took the throne in 1207 as Kaloyan’s successor, displacing the underage sons of Ivan Asen I, including the future Ivan Asen II and his brother Alexander. Supporters of the young princes removed Ivan Asen from danger, first taking him among the Cumans and subsequently to Galicia in the Russian lands. Yet the conventional description of Boril as a straightforward usurper requires qualification. George Acropolites, followed by Theodore Scutariotes, says only that after Kaloyan’s death Boril “became master”; neither author records a Boril-led conspiracy against Kaloyan. Moreover, early Asen succession had passed from brother to brother rather than from father to son, and the crown was still treated largely as the patrimony of the ruling family. Boril, Strez, and Alexius Slav could consequently regard themselves as dynastic claimants, although Boril alone secured the indivisible tsardom.

How Boril prevailed in Tarnovo is unknown. Ivan Duychev proposed that he may initially have acted as regent for Ivan Asen and Alexander, but this remains a doubtful hypothesis rather than an established fact. Narrative sources report that Boril married Kaloyan’s unnamed Cuman widow, an act often interpreted in older historiography as evidence of complicity in Kaloyan’s death. The more cautious explanation is that the marriage followed Boril’s accession and served to reinforce his authority, preserve Cuman military connections, and associate him with his predecessor’s household. No spouse is securely identified by personal name, and the evidence does not prove that Boril organized or even knew of a plot against Kaloyan.

The new tsar inherited a realm whose apparent strength had depended heavily on Kaloyan’s personal military success. John V. A. Fine characterizes it as a loose aggregation of provinces dominated by powerful boyars, each commanding local retainers and levies, rather than a centrally administered state with a permanent bureaucracy and state-financed army. Once Kaloyan was gone, dynastic opposition and regional separatism emerged rapidly. Boril never obtained the allegiance of the whole aristocracy or even of his entire family. Strez established an autonomous power in the Vardar valley, while Alexius Slav detached a large area in the Rhodopes. Henri de Valenciennes reports that Boril had taken Slav’s lands “through deceit,” but the precise sequence of seizure, revolt, and secession cannot be reconstructed.

In 1208 Boril attempted to restore Bulgarian authority in eastern Thrace, where Greek magnates had accepted Latin overlordship and the Latin Empire had advanced through indirect rule. Emperor Henry marched to Adrianople to oppose him and sought assistance from Alexius Slav, who was already at war with Boril. The surviving excerpts do not provide a secure name for the ensuing engagement, but the campaign ended disastrously for Bulgaria: Boril’s effort to recover eastern Thrace resulted instead in the loss of all Bulgarian-held Thrace. This reversal deprived him of the strategic gains made under Kaloyan and demonstrated that he could not reproduce his uncle’s ability to combine Bulgarian, Vlach, and Cuman forces in victorious offensive warfare.

For 1209 and 1210 the evidence does not support a detailed annual narrative. The essential development was continuing fragmentation rather than a securely dated sequence of campaigns. Strez remained entrenched in the Vardar region and Alexius Slav in the Rhodopes, while the central government struggled to bind the provincial aristocracy to Tarnovo. The motives of these dynasts are uncertain: they may have rebelled from personal ambition, or Boril’s distrust and attempts to subordinate them may have driven them into resistance. Whatever their intentions, their territories ceased to render effective obedience to the tsar and became independent factors in the diplomacy of Bulgaria, Thessalonica, Epirus, and the Latin Empire.

The year 1211 brought renewed military failure. Boril attempted a campaign against the Latin Kingdom of Thessalonica, but the operation was unsuccessful; Alexius Slav helped drive Boril’s forces from the Thessalonian theater and exploited the absence of the main Bulgarian army to seize Melnik, which thereafter became his principal residence. Boril’s brother Strez, although politically autonomous and at times Boril’s ally, suffered defeat at Pelagonia in the same year. These setbacks left the tsar unable either to recover the south or to reimpose authority over the southwestern dynasts. Even if Boril temporarily occupied part of Strez’s territory, as some scholars have suggested, he was unable to retain it.

Boril’s most enduring act occurred not on the battlefield but in the Church. On 11 February 1211 he convened at Tarnovo the first recorded Bulgarian council directed specifically against Bogomilism. For this occasion the Greek Synodikon of Orthodoxy was translated and adapted into Bulgarian; its Bulgarian recension, conventionally known as the Synodikon of Boril, became one of the most important monuments of medieval Bulgarian ecclesiastical and historical literature. The council has often been taken as proof that Bogomilism had become a mass threat, but Fine cautions that the evidence does not establish the sect’s numerical strength. It is equally possible that the hierarchy sought state action against a still limited movement and that Boril complied in order to secure ecclesiastical support.

The council should not be made the basis for portraying Boril as an uncompromisingly anti-Catholic ruler. Kaloyan had received a crown from a papal legate on 7 November 1204 and had formally recognized papal supremacy, although he continued to call himself tsar and the Tarnovo primate patriarch. The supplied evidence records no formal settlement by which Boril repudiated that inherited relationship. More importantly, within little more than two years of the anti-Bogomil council he established close relations with the Catholic Latin emperor and the Catholic king of Hungary. His church policy was therefore compatible with pragmatic diplomacy across confessional boundaries.

A serious uprising at Vidin exposed Boril’s domestic weakness, although its date is disputed. It was traditionally assigned to 1211 and connected with discontent after his defeats, but the sources themselves do not date it. A later reconstruction places it more plausibly in 1213, after Boril’s rapprochement with the Latin and Hungarian courts; the safest chronology is therefore between 1211 and 1213. The revolt was led by three Cuman officers, received support from other Cumans, and spread through northwestern Bulgaria. Unable to suppress it unaided, Boril appealed to King Andrew II of Hungary. Hungarian intervention restored his position, probably at the price of concessions involving the regions of Belgrade and Braničevo, although the precise terms are not preserved.

The year 1212 is illuminated chiefly by Emperor Henry’s letter of 13 January to “all his friends.” A passage in this document has sometimes been treated as decisive proof that Boril had illegally seized the Bulgarian crown. The Bulgarian historical synthesis represented in the excerpts rejects that interpretation: Henry was expressing the Latin imperial contention that Bulgarian rulers possessed lands belonging by right to the Roman, and subsequently Latin, Empire, an accusation already directed against Kaloyan in 1204. The letter consequently reveals Latin claims and ideological language more clearly than it reveals the mechanics of Boril’s accession. No securely documented Bulgarian campaign or formal treaty can otherwise be assigned to 1212 from the supplied material.

In 1213 Boril abandoned the anti-Latin course that had dominated his earlier reign and entered a durable alliance with Emperor Henry. Fine reconstructs a marriage between Boril and Henry’s unnamed niece, the daughter of Henry’s sister; the wedding probably occurred in 1213. If that reconstruction is correct, Kaloyan’s Cuman widow, previously Boril’s wife, was probably sent to a convent, but the detail remains inferential. Henry simultaneously married two other nieces from the same family to King Andrew II of Hungary and Theodore Lascaris of Nicaea. This network joined Bulgaria to the Latin Empire, Hungary, and Nicaea through coordinated marriage diplomacy and explains more convincingly why Andrew assisted Boril against the Vidin rebels. The Bulgarian-Latin alliance remained intact until Henry’s death.

A genealogical source also reports that in 1214 an unnamed daughter of Boril was betrothed to Andrew II’s heir, the future Béla IV. No child of Boril is securely known by name, and nothing further is recorded about this daughter. The projected marriage did not take place, and her subsequent fate is unknown. The episode nevertheless shows Boril attempting to consolidate the Hungarian connection by another dynastic arrangement. By 1215, however, the wider balance of power was turning against Bulgaria. After Strez’s death, his lands passed principally to Epirus and possibly, for a short time, to Thessalonica rather than to Boril. Under the vigorous Theodore, who ruled Epirus from 1215, the political initiative in the southern Balkans moved decisively away from Tarnovo.

Boril’s external support weakened sharply in 1216 and 1217. Emperor Henry died in June 1216, removing the principal architect of the Latin-Bulgarian alliance. In the following year King Andrew II departed eastward on crusade, depriving Boril of another powerful protector. The sources record no successful Bulgarian counteroffensive during these final years. Fine’s overall judgment is that, by the end of Boril’s decade on the throne, Bulgaria had lost its territories south of the Balkan Mountains, while the large southwestern regions ruled by Alexius Slav and Strez had escaped Tarnovo’s control. Although Boril may have been less personally incompetent than older historiography claimed, the territorial and political contraction of the state was unmistakable.

In 1218 supporters of Ivan Asen summoned the exiled prince back from Russia, and he entered Bulgaria with a mercenary force to reclaim what Acropolites calls his “paternal inheritance.” After defeating Boril’s resistance, Ivan Asen advanced on Tarnovo and besieged the capital. Acropolites states that the siege lasted seven years, but this chronology is irreconcilable with Boril’s documented activity between 1211 and 1218. Jireček and Vasil Zlatarski proposed an emendation to seven months, even though no manuscript of Acropolites preserves that reading; the most cautious conclusion is that the historian erred and that the decisive campaign and siege belonged to 1217–1218. Boril’s defenders lost heart and went over to Ivan Asen, while another account says the citizens opened the gates. Boril fled, was captured, and was blinded by his victorious rival. He died in 1218, though the circumstances following his blinding are not described, and Ivan Asen II succeeded him as tsar.

The economic and numismatic history of Boril’s reign is exceptionally obscure. The supplied sources name no fiscal reform, commercial charter, mint, denomination, weight standard, coin legend, or coin issue securely attributable to him; it would therefore be unsafe to construct a monetary policy for the reign. Nor is a Boril charter or contemporary royal inscription cited that would clarify taxation, land grants, or administrative organization. Structurally, local boyars collected revenues and controlled much of the military manpower, limiting the crown’s direct resources. The losses of Thrace, Melnik, the Rhodopes, and the Vardar lands necessarily narrowed the territory and strategic routes available to Tarnovo, but the scale of any decline in revenue, trade, or coin circulation cannot be quantified from the surviving evidence.

Boril’s reputation rests on a thin and uneven dossier: the later Byzantine narrative of George Acropolites, Theodore Scutariotes’ derivative account, Henri de Valenciennes, Emperor Henry’s letter of 13 January 1212, the Synodikon of Boril, and modern reconstructions by Bulgarian historians and genealogists, John V. A. Fine, and Donald M. Nicol. Acropolites supplies the essential account of Boril’s fall but gives the demonstrably problematic seven-year siege; the Latin evidence reflects the claims and interests of Emperor Henry’s court; and the Bulgarian Synodikon illuminates ecclesiastical policy more fully than secular government. Older histories condemned Boril as Kaloyan’s murderer, a usurper, and an inept ruler, but the accusation of murder is unsupported and the legal notion of usurpation is complicated by the Asen family’s patrimonial succession practices. His reign nevertheless marked a genuine retreat: regional dynasts broke away, major campaigns failed, and Bulgaria yielded the Balkan initiative to Epirus. His principal positive legacy was the 1211 council and the literary monument bearing his name; politically, his overthrow in 1218 restored the principal line of Ivan Asen I in the person of Ivan Asen II.