In 1513 he became doctor of the Faculty of Theology in the Sorbonne, and in 1515 was made Bishop of Vence.
He took an active part in the religious and polemical discussions that attended the Protestant Reformation.
This was a folio volume, treating of the name, origin, and achievements of the Gauls, Franks, and Burgundians.
Not long afterward he produced "L'histoire ecclésiastique de Normandie".
While Bishop of Riez he issued synodal statutes of that diocese, and wrote a treatise on weights and measures under the title: "De liquidorum leguminumque mensuris, seu verâ mensurarum ponderumque ratione" (Paris, 1532, 1535, 1547).