 Little is known about Crochan except that he is reputed to have lived around the time of Saint Patrick (mid 5th century).Some believe Crochan was from County Kerry, near Caherdaniel where there are two ruined churches named after him and a village also called Kilcrohane.There is a ruined church in the grounds of the cemetery in Kilcrohane, thought to be where Crohan built his cell.