Caillin

Saint Caillin of Ferns was a disciple of Saint Aidan of Ferns in Ireland, in the 6th or 7th century. The sources consulted say no more of his life. He is a saint of the undivided Church, known from the Western calendars.

He is commemorated on 1 November, the liturgical date in the Orthodox calendar (the same day number on the old and new calendars).