Isabeau d'Harcourt
- Born in 1250
Parents
- Jean Ier d'Harcourt (c. 1215 - 1288), chevalier, vicomte de Saint-Sauveur
- Alix de Beaumont-du-Gâtinais (c. 1210 - 1275)
Family
- Married with Jehan Wauthier de Saint-Martin (c. 1240 - ), issuing
Henri (c. 1270 - )