Boris III of Bulgaria
In the Third Bulgarian State, Ferdinand I of Bulgaria adopted the title tsar after he proclaimed Bulgaria's Independence in 1908, and his wife, Eleonore Reuss of Köstritz, previously "knyaginya", became "tsaritsa". The last Bulgarian tsaritsa was Giovanna of Italy, the wife of Tsar Boris III of Bulgaria. Margarita Gómez-Acebo y Cejuela, the wife of Simeon II of Bulgaria, is also sometimes referred as a tsaritsa.