He was tonsured on 9 June 1591 and was a sub-deacon until his promotion to the episcopate, and also commendatory abbot of Solignac Abbey in the diocese of Limoges, prior of Saint-Aubin in the diocese of Bazas and archdeacon of Bazas.
In 1630 he was transferred to Arles where on 20 July he acceded to the seat of archbishop of this city.
In 1638, he had to appeal to letters patent from the king authorizing him if necessary to have recourse to the Intendant of Provence to impose the concordat of 1639.
[2] Jean Jaubert de Barrault fell sick and had to move away from Arles, first to Paris then to Bordeaux where he died on 30 July 1643.
He was replaced at the archbishopric by his coadjutor, François Adhémar de Monteil.