1082 – Battle at Mailberg: Vratislav II of Bohemia beats Leopold II of Austr
1525 – Battle at Biblingen: Zwabische Union beats rebel Wurttemberg farmers
1588 – Catholic League under duke Henri de Guise occupies Paris
1875 – 1st recorded shutout in pro baseball, Chicago 1, St Louis 0
1916 – James Connolly and Sean McDermott are executed following their involvement in the Easter Rising in Dublin
1941 – Martin Bormann succeeds Rudolf Hess as Adolf Hitler’s deputy
1941 – Konrad Zuse presents the Z3, the world’s first working programmable, fully automatic computer, in Berlin
1967 – 1st quadraphonic concert by Pink Floyd at the Games for May concert in London
1990 – NHL Clarence Campbell Conference Final: Edmonton Oilers beat Chicago Blackhawks, 4 games to 2
2003 – The Riyadh compound bombings, carried out by Al Qaeda, kill 26