He established a monastery and school in the area now known as Rosscarbery towards the end of the sixth century. His monastery became the principal monastery of west Cork, and later had a famous Scripture school known as the School of Ross.
In the late sixth century, he established a monastery and school in the region that is now Rosscarbery. His monastery served as the leading monastery for western Cork, and later gained fame for its Scriptural school known as the School of Ross.