Leopold III, Margrave of Austria

Leopold III (German: Luitpold, Latin: Leupoldus, 1073 – 15 November 1136), known as Leopold the Good, was the Margrave of Austria from 1095 to his death in 1136. He was a member of the House of Babenberg. He was canonized on 6 January 1485 and became the patron saint of Austria, Lower Austria, Upper Austria and Vienna. His feast day is 15 November.

Source: Wikipedia — https://en.wikipedia.org/wiki/Leopold_III,_Margrave_of_Austria