12h 26min, dec 31, 1676 y - Event 9
Mary Stuart marries William of Orange, Charles I's grandson
Mary Stuart was the elder daughter of Charles II's brother, James, Duke of York (James II). Her marriage in 1677 to the Dutch Protestant Prince William of Orange, himself the grandson of Charles I, strengthened William's claim to the English throne.
Added to timeline:
The Struggle between the Stuart Kings and Parliament