- Born circa 1521
- Deceased on September 18, 1544, at the approximate age of 22 years
Parents
- Pierre de Guilhem de Castelnau (c. 1490 - 1537), baron de Clermont-Lodève, gouverneur du Languedoc
- Marguerite de La Tour (1500 - aft. 1572)
Family
- Married with Louise d'Avaugour (1515 - 1608), fille d'honneur de marguerite d'angoulème de navarre, issuing
- Guy (1543 - 1580)