of Antrim, Irish leader December 19 – William Spencer, 2nd Baron Spencer of Wormleighton, British baron (b. 1591) December 22 – Johannes Saeckma, Dutch Golden Age magistrate (b. 1572) December 27 – Iskandar Muda, Sultan of Aceh (b. 1583) date unknown – Euphrosina Heldina von Dieffenau; German-Swedish courtier Louise Bourgeois Boursier, French Royal midwife (b. 1563) References Leap years in the Gregorian calendar