Guillaume III, Duc d'Aquitaine was born circa 915.
He was the son of Ebalus, Duc d'Aquitaine.
He married Adele de Normandie, daughter of Rollo Ragnvaldsson, 1st Duc de Normandie and Poppa of Normandy de Valois, in 935.
He died on 3 April 963.Guillaume III, Duc d'Aquitaine also went by the nick-name of William 'Towhead'.
He was a member of the House of Poitiers.
He succeeded to the title of Duc d'Aquitaine in 934.
He gained the title of Comte de Poitou.
Children of Guillaume III, Duc d'Aquitaine and Adele de Normandie:
1.Guillaume IV, Duc d'Aquitaine b. c 937, d. bt 995 - 996
2.Adelaide de Poitou b. c 945, d. bt 1004 - 1005