 In 1317, Pope John XXII engaged in a major restructuring of the episcopal organization of southern and western France, both in territory governed by the King of France and territory governed by the King of England.On 13 August 1317, in the Bull "Sane Considerantes", he divided the diocese of Poitiers, creating the new dioceses of Luçon and Maillezais, and erecting the monastery church of Maillezais into a cathedral.His stated reason was the large size of the diocese of Poitiers and its large population, which made it difficult for only one bishop to provide all the spiritual services needed.