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 III of the Netherlands William III of the Netherlands William III (Dutch: "Willem Alexander Paul Frederik Lodewijk"; English: "William Alexander Paul Frederick Louis"; 19 February 1817 – 23 November 1890) was King of the Netherlands and Grand Duke of Luxembourg from 1849 until his death in 1890. He was also the Duke of Limburg from 1849 until the abolition of the duchy in 1866. William was the son of King William II and Anna Pavlovna of Russia. On the abdication of his grandfather William I in 1840, he became the Prince of Orange. On the death of his father in 1849, he succeeded as