Sir Gauthier or Walter Mauny (c. 1310 - 1372), soldier and celebrated military leader; fourth son of Jean le Borgne, lord of Masny in the imperial court of Hainault, and Jeanne de Jenlain. Sir Walter Mauny came to England in the entourage of Philippa of Hainault and advanced rapidly in Edward III's court. He married Margaret Marshal, Edward III's cousin.
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