Nicholas I, Duke of Troppau
King
Nicholas I was the natural son of Bohemian king Ottokar II Přemysl and his mistress Agnes of Kuenring. In 1269 he became Duke of Opava and thereby the progenitor of the Silesian cadet branch of the Přemyslid dynasty that lasted until 1521. Wikipedia
Born: 1255
Died: July 25, 1318 (age 63 years), Brno, Czechia
Parents: Ottokar II of Bohemia and Agnes of Kuenring
Children: Nicholas II, Duke of Opava and Wenceslaus of Opava
Grandchildren: Přemek I, Duke of Opava, John I, Duke of Opava-Ratibor, Nicholas III, Duke of Opava, and more
Spouse: Adelaide of Habsburg (m. 1283–1313)