Jean I of Fezensaguet
Jean I of Fezensaguet (died 1390), a Gascon noble of the House of Armagnac, was vicomte of Fézensaguet from 1339. The son of Géraud III and Jeanne de Comminges, he married Marguerite Duèze, the vicomte of Carmain's daughter; his son Géraud succeeded him.