sentences:  The cathedral belonged to the Diocese of Luçon, with Roman Rites, and with St. Peter as the patron saint.Around 1100, Abbot Pierre wrote two books on the founding and construction of the Abbey of Maillezais.The Abbot Pierre's account tells that during a hunting expedition in 976, Countess Emma, the wife of William IV, Duke of Aquitaine, discovered the ruins of a chapel dedicated to Saint Hilaire and decided to found an abbey at the site.