Saint John of Capistrano

John of Capistrano was a Franciscan friar and priest from the Italian town of Capestrano, Abruzzo. Famous as a preacher, theologian, and inquisitor, he earned himself the nickname 'the Soldier Saint' when in 1456 at age 70 he led a crusade against the invading Ottoman Empire at the siege of Belgrade with the Hungarian military commander John Hunyadi.