Jan 25 On this day in history birth of william Cavendish, 1st Duke of Devonshire, English soldier and statesman (d. 1707)
Mar 18 Philippe de la Hire, French mathematician and astronomer (d. 1719) was born on this day in history.
Mar 30 On this day in history birth of john Trenchard, English politician (d. 1695)
Apr 01 Georg Mohr, Danish mathematician (d. 1697) was born in the year 1640.
Apr 22 In the year 1640 birth of mariana Alcoforado, Portugal, nun
May 31 Michał Wiśniowiecki, King of Poland (d. 1673) was born in the year 1640.
Jun 05 Pu Songling, Chinese writer (d. 1715) was born in the year 1640.
Jun 09 In the year 1640 birth of leopold I, Holy Roman Emperor (1658-1705)