Famous Deaths May 3 Alexander V [Petros Philargi], Kreta's Pope (1409-10), dies May 18 Rupert, King of Germany (1400-10), dies at 58 May 31 King Martin I of Aragon (b. 1356) 1409 History by Year 1411 What Happened in 1410 Battle of GrunwaldJuly 15, 1410