There had been a monastery there since the 8th century. It was probably taken over by Céli Dé (
Culdees) monks in the 9th or 10th centuries, and these survive into the 14th century. It is the Gaelic
abbey, rather than the continental
priory, that the
abbot was in charge of; the importance of the Céli Dé abbey has come down into the modern era in the street names of St. Andrews. Only a few abbots are known. It is often thought that the position of Abbot and Bishop were the same until the Norman era, but clear evidence for this is lacking. ==List of known bishops==