He was the son of Jean de Dombidau, a counselor at the Parlement of Navarre, baron of Crouseilles, and a member of the Estates of Béarn.

[1] Ordained a priest on December 23, 1775,[3] he benefited from his father's connections to secure lucrative benefices.

[1] Under the Consulate, he returned to France, serving in Aix-en-Provence and later following Boisgelin de Cucé as Vicar General of the Archdiocese of Tours in 1802.

[1] Dombidau de Crouseilles was hesitant to publish the Imperial Catechism but participated in the Council of Paris (1811) and remained loyal to the Empire.

[1] After the fall of Napoleon, he aligned with Louis XVIII and declined the Archbishopric of Rouen in 1823, shortly before his death on June 28, 1823, in Quimper.