1944 Event Boulogne reoccupied by Allies 1940 Event German troops conquer Boulogne 1806 Event British forces lay siege to French port of Boulogne using Congreve rockets, invented by Sir William Congreve 1632 Death Valentin de Boulogne, French painter, buried at 38 1573 Event Pacificatie of Boulogne: new peace treaty with huguenots 1550 Event France and England sign Peace of Boulogne 1544 Event English King Henry VIII's troops occupy Boulogne 1100 Event Boudouin I of Boulogne crowned king of Jerusalem
