Cliffs of Moher - Irish Place Names

Patrick Weston Joyce
1923

Cliffs of Moher. The term Mothar [Moher] is applied in the south of Ireland to the ruin of a caher, rath, or fort; and on a cliff near Hag's Head there stands an old stone fort, called Moher O'Ruan, O'Ruan's ruined fort, from which the cliffs of Moher received their name.