A son of one of the last Bulgarian tsars, Ivan Shishman of the Tarnovo Tsardom, Fruzhin co-organized the so-called Uprising of Konstantin and Fruzhin along with Constantine II of Vidin, the last Bulgarian monarchs.
Fruzhin, a descendant of the last Bulgarian tsars, Ivan Shishman, co-organized the so-called Uprising of Konstantin and Fruzhin with Constantine II of Vidin, the final Bulgarian monarchs.