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 the Conqueror of the creators of England's greatness or as inflicting one of the greatest defeats in English history. Others have viewed William as an enemy of the English constitution, or alternatively as its creator. William and his wife Matilda of Flanders had at least nine children. The birth order of the sons is clear, but no source gives the relative order of birth of the daughters. There is no evidence of any illegitimate children born to William. William the Conqueror William I (c. 1028 – 9 September 1087), usually known as William the Conqueror and sometimes William the Bastard, was the