Mouxy was a parish - Mauseu ecclesia - which depended on the Priory of Clarafont according to an act of 1344. During this period, a new church dedicated to Saint-John-the-Greater was built. Previously, the Mouxy area depended on either the Priory of Saint-Pol or Saint-Hippolyte in Aix. The parish was subsequently attached to the Priory of Aix in the 16th century. We learn that the priest of the Church, in 1340, offered to the Bishop during his pastoral visit a stipend of 9 florins. In 1494, the income of the parish priest was estimated to be 50 guilders. The Church did not originally have an image of its patron saint, or other object of worship. By 1678 it had relics of Saint James, Saint Alexis and the true cross.Mémoires, vol. 3, t. VI, Chambéry, Académie de Savoie - Imprimerie Chatelain, 1878, 798 p., p. 96, 387, 468–469, 712
