Marina Smilets (Bulgarian: Марина Смилец) (before 1292 – 7 April 1355) was the eledest daughter of tsar Smilets of Bulgaria and his Byzantine wife. The date and the place of Marina's birth are unknown, but she was born before her father's ascension on the Bulgarian throne in 1292, maybe in his official residence in Kran. Her mother was the daughter of sebastocrator Constantine Palaiologos and niece of Michael VIII Palaiologos. In the histories she was called just Smiltsena (Bulgarian: Смилцена; the wife of Smilets), without a name being given. Marina was the elder sister of tsar Ivan II of Bulgaria and Theodora, queen-consort of Kingdom of Serbia. Marina Smilets was maternal aunt of King Stefan Uroš IV Dušan of Serbia. Tsar Smilets died...
