vaded England in 1066 with an army that included some Bretons. William was able to attract Bretons into his expeditionary army for the upcoming campaign to claim the English crown., perhaps in part because the Breton commanders in Duke William's army were the second-sons of Breton lords, such as Alain Le Roux (son of Eudas of Penthièvre). The Bretons within the Conquest army represented at least three major groupings, two of which would become relevant to the long-term future of the duchy. One group was represented by Ralph de Gael, briefly the Earl of Suffolk. In 1075 he was among the leaders of a "Breton revolt". Ralph escaped returning to Brittany where he also revolted agai