Alan IV, Duke of Brittany of William the Bastard, Duke of Normandy (later to become known as William the Conqueror) support of rebels in Brittany against Alan's maternal uncle, Conan II. Conan II died in late 1066 during a campaign in Anjou, and was succeeded by Alan's parents, Conan's sister Hawise and her husband Hoel II. Hoel ruled as regent from Hawise's death in 1072 until Alan reached his majority in 1084. To prevent further hostilities during his invasion of England, William I married his daughter Constance to the new duke Alan in 1087. The marriage ceremonies may have taken place in Bayeux in Normandy.
William Hamilton, Duke of Hamilton and Mary II in March 1689. His death took place at Holyrood Palace on 18 April 1694. His wife survived until 17 April 1716. He was married to Anne Hamilton, 3rd Duchess of Hamilton, who bore eleven children by him. He adopted the surname Douglas-Hamilton and the Hamilton arms, and his children bore the surname Hamilton. William Hamilton, Duke of Hamilton William Douglas-Hamilton, Duke of Hamilton, KG, PC (24 December 1634 – 18 April 1694), also known as Lord William Douglas and the Earl of Selkirk, was a Scottish nobleman and politician. He was the eldest son of William Douglas,