1452 Leonardo da Vinci, Italy, painter/sculptor/scientist/visionary was born on April - 15.
1469 Nanak, 1st guru of Sikhs was born on this day in history.
1489 Sinan, Ottoman architect (d. 1588) was born on April - 15.
1552 Pietro Cataldi, Italian mathematician (d. 1626) was born on April - 15.
1588 Claudius Salmasius, [Claude Saumaise], French linguist was born on this day in history.
1637 On April - 15 birth of valentin Molitor, composer
1641 Robert Sibbald, Scottish physician (d. 1722) was born on this day in history.
1646 On April - 15 birth of king Christian V of Denmark (d. 1699)
1053 On April - 15 death of godwin, Earl of Wessex
1220 Adolf I, archbishop of Cologne, dies on this day in history.
1415 Death of Manuel Chrysoloras, Greek humanist and grammarian on April - 15.
1472 On April - 15 leon B Alberti, Italian humanist/architect (Philodoxis), dies at 68
1502 Jan IV Chalon, prince of Orange, dies on this day in history.
1605 On this day in history boris Godunov, tsar of Russia (1598-1605), dies
1607 Cornelius Kilianus, Flemish translator/poet, dies at about 78 on this day in history.
1610 On April - 15 johan van Duivenoorde, mister of Warmond, dies at about 62