Theodora Palaiologina of Bulgaria

Theodora Palaiologina
Empress consort of Bulgaria
Tenure	1308–1321 1324–1330
Born	Unknown Byzantine Empire
Spouse	Theodore Svetoslav Michael Shishman
House	Palaiologos
Father	Michael IX Palaiologos
Mother	Rita of Armenia

Thodora Palaiologina (Bulgarian: Теодора Палеологина, Greek: Θεοδώρα Παλαιολογίνα, fl. 1308–1330) was a Byzantine princess who became a Bulgarian empress as wife of the emperors Theodore Svetoslav from 1308 to his death in 1321, and Michael Shishman from 1324 to his fall in the Battle of Velbazhd on 28 July 1330.

She was a daughter of the Byzantine emperor Michael IX Palaiologos (r. 1295–1320), son and co-ruler of Andronikos II Palaiologos (r. 1282–1328), and Rita of Armenia who was a daughter of the ruler of the Armenian Kingdom of Cilicia. She was a sister of Byzantine emperor Andronikos III Palaiologos (r. 1328–1341).

Theodore Svetoslav asked to marry her in the end of 1307 in order to end the successful war against the Byzantine Empire which started when he became emperor in 1300. Andronikos II had agree and also abandon claims on the southern Black Sea towns such as Messembria and Anchialus which remained within the borders of Bulgaria. The marriage was probably concluded in the spring of 1308. After the death of Theodore Svetoslav, she remained in Tarnovo. It seems that Theodora had good relations with her step-son and new emperor George II Terter (r. 1321–1322) who was a child her predecessor Euphrosyne. She stayed in the capital after the early death of George II and the beginning of the rule of the despot of Vidin, Michael Shishman.

...
Wikipedia