Wikipedia
Saint Gervadius (Garnat, Garnet, Gerardin, Gerardine, Gernard, Gernardius, Gervardius, Gervat) (d. ~934 AD) was an Irish saint. His feast day is celebrated on 8 November. He was an Irishman who established himself as a hermit in Scotland, near Kenedor (present day Kinneddar, Lossiemouth, Moray).
He may have emigrated to escape Viking raids in his native land. It is possible he may have been part of a Gaelic religious community that was present in Kinneddar in the 10th century, and who placed his cell in a cave in a rocky promontory to the east.
The early maps give reference to his having been there by naming the area Holyman's Head near Elgin. His cave became a place of pilgrimage right up to the Reformation and survived into the 19th century before being quarried out.