Byzantine-Mongol alliance

A Byzantine-Mongol alliance ["The Islamic World in Ascendancy", Martin Sicker, p.132 "This Byzantine-Mongol alliance…" [http://books.google.com/books?id=v3AdA-Ogl34C&pg=PA132&lpg=PA132&dq=%22byzantine+mongol%22+alliance&source=web&ots=ogSO5tAbcl&sig=2j59Ws_YO7rXM7mO4q4fRtz9eh4] ] ["…agreed to prolong the Byzantine-Mongol (Iranian) alliance." Gilbert Dagron, Pré-Actes, p. 309.] ["From 1273 Michael allied with Noghai, giving him an illegitimate daughter in marriage and using him as a means to put pressure on Bulgaria", Jackson, "The Mongols and the West", pp. 202–3.] occurred during the end of the 13th and the beginning of the 14th century between the Byzantine Empire and the Mongol Empire. Byzantium actually tried to maintain friendly relations with both the Golden Horde and the Ilkhanate realms, who were often at war with each other. The alliance involved numerous exchanges of presents, military collaboration and marital links, but dissolved in the middle of the 14th century.

Diplomatic overtures

In the early 1250s, the Latin emperor of Constantinople Baldwin II sent an embassy to Mongolia in the person of the knight Baudoin de Hainaut, who, following his return, met in Constantinople with the departing William of Rubruck. [Jean Richard, p. 377.]

Alliance under Michael VIII (1263–1282)

Emperor Michael VIII Palaiologos, after re-establishing Byzantine Imperial rule, established an alliance with the Mongols, ["The sustained attacks by the Sultan Baibars (…) rallied the Occidentals to this alliance [with the Mongols] , to which the Mongols also convinced the Byzantines to adhere", Jean Richard, “Histoire des Croisades”, p. 453.] who themselves were highly favourable to Christianity, many of them being Nestorian Christians.

He signed a treaty in 1263 with the Mongol Khan of the Kipchak (the Golden Horde), [Cambridge, p. 304.] and he married two of his daughters (conceived through a mistress, a Diplovatatzina) to Mongol kings: Euphrosyne Palaiologina, who married Nogai Khan of the Golden Horde, and Maria Palaiologina, who married Abaqa Khan of Ilkhanid Persia. [Runciman, "History of the Crusades", p. 320.]

According to a 1267 letter by Pope Clement IV from Viterbo, Abaqa had agreed to combine forces with his father-in-law Michael VIII to help the Latins in the Holy Land, in preparation for the Eighth Crusade (the second of Louis IX):

When Michael became an ally of Noghai, he used his help to defend himself against Bulgaria when it tried to attack the Byzantine Empire in 1273 and 1279. [Jackson, pp. 202–3.] A group of 4,000 Mongol soldiers were dispatched to Constantinople in 1282, just before the death of Michael, to fight against the despot of Thessaly.Jackson, p. 203.] I. Heath, "Byzantine Armies: AD 1118–1461", p. 24.]

Alliance under Andronikos II (1282–1328)

After 1295, Andronikos II offered Ghazan a marital alliance, in exchange for Mongol help to fight against the Turcomans at the Oriental frontier of the Byzantine Empire. Ghazan accepted the offer and promised to stop the incursions. [Luisetto, p.144-145, referencing Pachymeres] The death of Ghazan in 1308 was mourned by the Byzantines. [Luisetto, p.145]

This alliance would continue under Ghazan's successor, Oljeitu. In 1305 Ilkhan Oljeitu promised Andronicus II 40,000 men, and in 1308 dispatched 30,000 men to recover many Byzantine towns in Bithynia.I. Heath, "Byzantine Armies: AD 1118–1461", pp. 24–33.] Andronicus II gave daughters in marriage to Toqto'a, as well as his successor Uzbek (1312–1341), but relations turned sour at the end of Andonicus's reign and the Mongols mounted raids on Thrace between 1320 to 1324, until the Byzantine port of Vicina Macaria was occupied by the Mongols.

End of friendly relations

Under Andronikos III relations seem to have turned even more conflictual. In 1341, the Mongols planned to attack Constantinople, and Andronikos III had to send an embassy to stop the attack.

Notes

References

* I. Heath, "Byzantine Armies: AD 1118–1461".
* Nicol, Donald. "The Last Centuries of Byzantium, 1261–1453", 1993.
* "Oxford Dictionary of Byzantium", Oxford University Press, 1991.
* Vannier, J-F. "Les premiers Paléologues" (Etudes prosopographiques), 1989.
* Jean Richard, “Histoire des Croisades”.
* Peter Jackson, "The Mongols and the West".
* Luisetto, Frédéric (2007). Arméniens & autres Chrétiens d'Orient sous la domination Mongole (in French). Librairie Orientaliste Paul Geuthner S.A. ISBN 9782705337919
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