Catherine of Bosnia (Serbo-Croatian: Katarina Tomašević Kotromanić/Катарина Томашевић Котроманић; born in 1453) was a member of the House of Kotromanić and the last Bosnian princess.
The royal family apparently decided to split and flee towards Croatia proper and the coast in different directions to confuse and mislead the invaders.
[4] The fate of Sigismund following the fall of Bosnia is relatively well-known – he converted to Islam, becoming known as Ishak Bey the King's Son, and built a career as a high-ranking Ottoman statesman.
[6] According to a hypothesis of the Serbian historian Gligorije Elezović, the guardianship of the princess was entrusted to Isa-Beg Isaković, the sanjakbey of Skopje who may have been her maternal granduncle, in whose household she converted.
[7] Shortly before her death in 1478, the Queen devised a will in which she named Catherine the heir to the Bosnian throne, in case she returned to Christianity and her brother did not.