Guy Constance de Guilhem de Castelnau
- Born circa 1699
- Deceased in 1715 in Paris, at the approximate age of 15 years
Parents
- Louis de Guilhem de Castelnau ( - 1705), maître de la garde-robe du Roi
- Jeanne Thérèse Pélagie d'Albert de Luynes (1675 - 1756)