Judith, born in 982, was the daughter of Conan I, Duke of Brittany and Ermengarde-Gerberga of Anjou.

[1] She was a part of an important double marriage alliance between Normandy and Brittany first recorded by William of Jumièges.

[2] In 996, her brother Geoffrey I, Duke of Brittany married Hawise of Normandy, daughter of Richard I, Duke of Normandy while in c. 1000 Judith married Richard II, Duke of Normandy, Hawise's brother.

[3] The duchess Judith died on 28 August 1017 and was buried in the abbey of Bernay, which she had founded in 1013.

[4] Judith married Richard II, Duke of Normandy in c. 1000.