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