Guillaume III l'Archevêque de Parthenay, Lord of Parthenay, was born circa 1100 in Parthenay to Simon II de Parthenay (1080-1121) and Emperia and died circa 1140 of unspecified causes. He married Théophanie de Beaumont-Bressuire . Charlemagne (747-814)/s.
|Offspring of Guillaume III de Parthenay and Théophanie de Beaumont-Bressuire|
|Guillaume IV de Parthenay (c1130-1182)||1130 Parthenay||1182||Rosanne|