 In 1350, when he is first mentioned, Boeri was Abbot of St. Chinian (St. Anianus, Hérault) in the small diocese of Saint-Pons de Tomièrs (Sancti Pontii Tomeriarum) which at that time formed a part of the Metropolitan Province of Narbonne.He attracted the favourable notice of Pope Urban V, who appointed him Bishop of Orvieto, 16 November 1364.A few years later (7 October 1370) he was transferred by the same pontiff to the See of Vaison, near Avignon in France.