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.
Baldwin V, Count of Flanders Baldwin V, Count of Flanders Baldwin V of Flanders (c. 1012 – 1 September 1067) was Count of Flanders from 1035 until his death. He was the son of Baldwin IV, Count of Flanders, who died in 1035. In 1028 Baldwin married Adèle of France in Amiens, daughter of King Robert II of France; at her instigation he rebelled against his father but in 1030 peace was sworn and the old count continued to rule until his death. During a long war (1046–1056) as an ally of Godfrey the Bearded, Duke of Lorraine, against the Holy Roman Emperor Henry III,