London: Methuen, (1938). Revised and enlarged edition. Hardcover. Blue cloth with gilt spine title; xxxv, 433 pp., folding map. Edges spotted, some fading to covers, else fine in lightly edgeworn jacket. Near fine / very good. Item #21441
Originally published in 1923, "The author has now completely re-written it, correcting it in some points, enlarging it at the beginning, and incorporating the results of the very considerable studies which have been directed to Irish mediaeval history by himself and others since the first edition appeared." (from jacket front flap).