1488 On April - 21 birth of ulrich von Hutten, German poet/humanist/patriot
1546 Arcangelo Crivelli, composer was born on April - 21.
1555 Ludovico Carracci, Italian painter (d. 1619) was born on April - 21.
1619 On this day in history birth of john A van Riebeeck, colonial director/founder (Cape Colony)
1651 Blessed Joseph Vaz, Apostle of Ceylon (d. 1711) was born on this day in history.
1652 Michel Rolle, French mathematician (d. 1719) was born on April - 21.
1671 John Law, Scottish economist (d. 1729) was born on this day in history.
1672 On April - 21 birth of johann Philipp Kafer, composer
1073 Alexander II, [Anselmo da Baggio], Pope (1061-73), dies on this day in history.
1109 On this day in history anselmus, philosopher/archbishop of Canterbury, dies
1142 Death of Pierre Abélard, French writer (b. 1079) on this day in history.
1329 On this day in history death of frederick IV, Duke of Lorraine (b. 1282)
1509 Henry VII, 1st Tudor king of England (1485-1509), dies at 52 on this day in history.
1551 Death of Oda Nobuhide, Japanese warlord (b. 1510) on April - 21.
1552 Peter Apianus, [Bennewitz/Bienewitz], German astronomer, dies at 50 on this day in history.
1557 On April - 21 death of petrus Apianus, German mathematician (b. 1495)