Deaths on March 18

Arthur Chichester, 1st Earl of Donegall, Irish soldier (b. 1606)

Arthur Chichester, 1st Earl of Donegall (16 June 1606 – 18 March 1675), was an Anglo-Irish peer and soldier.

4 May

Royal Greenwich Observatory
King Charles II of England orders the construction of the Royal Greenwich Observatory.
11 Aug

Battle of Konzer Brücke
Franco-Dutch War: Forces of the Holy Roman Empire defeat the French in the Battle of Konzer Brücke.
2 Nov

King Philip's War
Plymouth Colony governor Josiah Winslow leads a colonial militia against the Narragansett during King Philip's War.
11 Nov

Integral calculus
Gottfried Leibniz demonstrates integral calculus for the first time to find the area under the graph of y = ƒ(x).