Power has tracked the story of St Aidan, the founder and first bishop of the diocese of Ferns, through the places named after him, the archaeological remains and the literature that recounts his miraculous works, based on the hagiographies of the early Saints. There are two holy wells dedicated to St Aidan: St Mogue's Well in Ferns, Co. Wexford and St Maedhog's well at Whitesands, Pembrokeshire.