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Alan Iv, Duke Of Brittany




Alan IV had to face an invasion of William I Of England and was forced to abandon his duchy in 1086. Peace was made in the same year and Alan married Princess Constance Of England , William's daughter. This marriage was forced upon Alan and he is presumed responsible for Constance's death by poisoning in 1090 -- William Of Malmesbury says she was killed because she was too conservative for the Breton court. Alan married again in 1093 with Ermengarde Of Anjou , a formidable woman who became the real ruler of Brittany. By her he had a son Geoffrey, a daughter Hawise (married to count Baldwin VII Of Flanders ) and his heir Conan . In 1098 Alan went on Crusade, leaving Ermengarde as his regent, and returned in 1101. Alan IV was not a popular duke and was forced to abdicate in 1112. He retired to the monastery of Redon and died there in 1119.

His illegitimate son was Brien FitzCount .

See also: Dukes Of Brittany Family Tree