Guy I of Clermont Lord of Breteuil and Offemont and a Marshal of France (1255-1302) (1255–1302) Parents Simon II of Clermont Children Mahaut de Clermont-Nesle Jean de Nesle-Offémont Siblings Raoul of Clermont Béatrix de Clermont Simon II of Clermont-Nesle Alix dite Ide de Clermont-Nesle Partners Marguerite de Thorotte, Dame d'Offemont