Constantine Palaiologos Asen
Constantine Palaiologos Asen was a Byzantine aristocrat and officer, a son of Bulgarian Tsar Ivan Asen III and Irene Palaiologina, probably born in exile in the late thirteenth century. In 1324 he and his brother Andronikos Asen signed Byzantium's treaty with Venice, and during the civil war between the two Andronikoi he served Andronikos II as strategos until captured in the defeat at the River Melas in 1328.
In 1342, supporting John V Palaiologos, he signed another Venetian treaty but was soon arrested with his son on Alexios Apokaukos' orders and vanished from the sources.