Rudolf II, Duke of Austria
Emperor
Rudolf II, a member of the House of Habsburg, was Duke of Austria and Styria from 1282 to 1283, jointly with his elder brother Albert I, who succeeded him. Wikipedia
Born: 1270, Rheinfelden, Switzerland
Died: May 10, 1290 (age 20 years), Prague, Czechia
Parents: Rudolph I of Germany and Gertrude of Hohenberg
Children: John Parricida
Partner: Agnes of Bohemia (1289–)