Medieval Bulgarian royalty

thumb|262px|The Şoimoş castle near modern Lipova, likely the seat of Fruzhin's Hungarian domains thumb|262px|coat of arms on last bulgarian rulers Fruzhin and Konstantin II Asen in Bayerische Staatsbibliothek, München Fruzhin (; also transliterated Fružin or Frujin; died ) was a 15th-century Bulgarian noble who fought actively against the Ottoman conquest of the Second Bulgarian Empire. 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 medieval Bulgar