On his arrival to St. Jacques, he signed a petition supporting Philip the Fair's attempt to convoke a council in his war with Pope Boniface VIII on grounds of papal jurisdiction.
[5] A resolute early Thomist,[6] nicknamed Doctor rarus, he was a tenacious opponent of the theology of Durandus of Saint-Pourçain.
[9] He became Master of the Order of Preachers in 1318, a post he held until he died in 1323 on the way to attend the canonization of Thomas Aquinas.
In addition to these acts, Natalis sought to reign in the studia generalia by abolishing the title magister.
Throughout those years, both Natalis and Durandus of St. Pourçain exchanged polemics and writings that sought to disprove the other.