Keratsa Petritsa

Keratsa Petritsa (born c. 1280) was a Bulgarian noblewoman, a daughter of Despot Shishman of Vidin and sister of Tsar Michael Shishman. Around 1300 she married the sebastokrator Sratsimir, lord of Kran or Karvuna, and through her mother traced descent from Tsar Ivan Asen II.

Her children included Ivan Alexander, who seized the Bulgarian throne in 1331, and Helena, who married the Serbian king Stefan Dušan in 1332. Late in life she returned to Orthodoxy and took the veil as Theophana.