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