Guy IX de Laval
Guy IX de Laval was a member of the House of Laval. He was Seigneur de Laval and d'Acquigny, of Beaumont-du-Gâtinais, Viscomte de Rennes, Comte de Caserte in Campania and Baron de Vitré.
Family
Guy IX was the son of Guy VIII de Laval and Isabelle de Beaumont-GâtinaisIn 1297 he married Béatrix de Gavre, countess of Falkemberg, only daughter of Rasès de Gavre.
Children:
- Guy X de Laval, who married Béatrix de Bretagne, daughter of Arthur II, Duke of Brittany, on 2 March 1315
- Rasès de Laval, lord of Morhem in Flanders, died after 1348, without known offspring
- Foulques de Laval, progenitor of the lords of Challouyau in Burgundy and Retz
- Pierre de Laval, bishop of Rennes, died 1357
- Jean de Laval, knight, lord of Passy-sur-Marne, who married Jeanne de Chemillé, and Aliénor Le Bigot de la Bérardière
- Isabeau, who married Péan de La Roche-Bernard, Lord of Lohéac
- Catherine de Laval, wife of Gérard IV de Retz
- Jeanne de Laval, nun at Saint-Georges de Rennes.