In the twelfth century three of the oldest native Irish monasteries were ordered to adopt the Rule of the Canons of St. Augustine: Cross Abbey (which had been transferred from Inisglora to Kilmore Erris); Errew Abbey on Lough Conn and Aughris in Tireragh (said to have been founded from Inishmurray by St. Molaise in 571). In the Middle Ages monasteries in the diocese included the three just mentioned together with Rathfran, Ardnaree, Rosserk, Moyne, and Bofeenaun as well as other churches like Kilglass.