1488 On April - 21 birth of ulrich von Hutten, German poet/humanist/patriot
1546 On April - 21 birth of arcangelo Crivelli, composer
1555 On this day in history birth of ludovico Carracci, Italian painter (d. 1619)
1619 On April - 21 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 On April - 21 birth of michel Rolle, French mathematician (d. 1719)
1671 On this day in history birth of john Law, Scottish economist (d. 1729)
1672 Johann Philipp Kafer, composer was born on this day in history.
1073 Alexander II, [Anselmo da Baggio], Pope (1061-73), dies on April - 21.
1109 On this day in history anselmus, philosopher/archbishop of Canterbury, dies
1142 On April - 21 death of pierre Abélard, French writer (b. 1079)
1329 Death of Frederick IV, Duke of Lorraine (b. 1282) on this day in history.
1509 On this day in history henry VII, 1st Tudor king of England (1485-1509), dies at 52
1551 Death of Oda Nobuhide, Japanese warlord (b. 1510) on this day in history.
1552 On April - 21 peter Apianus, [Bennewitz/Bienewitz], German astronomer, dies at 50
1557 On April - 21 death of petrus Apianus, German mathematician (b. 1495)