St Fillan: The patron saint of the mentally ill. Born in Ireland, the son of Feriach and St Kentigerna.
Early in the 8th Century, Fillan settled at Strathfillan, at the head of Glen Dochart, where he built a church. Next to the church, near Auchentyre in Strathfillan was the Holy Pool. This was blessed by the Saint, and consequently developed healing powers and proving particularly curative for the mentally ill who were attracted in large numbers over succeeding centuries.