Guy IX de Laval
# Guy IX de Laval

Guy IX de Laval (c. 1270 – 22 January 1333) 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-Gâtinais

In 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 (died childless), and Aliénor Le Bigot de la Bérardière
* Isabeau (died 1322), who married Péan de La Roche-Bernard (died 18 June 1347 - Battle of La Roche-Derrien), Lord of Lohéac
* Catherine de Laval, wife of Gérard IV de Retz
* Jeanne de Laval, nun at Saint-Georges de Rennes.
