Ireland Under The Normans. 1169-1216; 1216-1333. Oxford: Clarendon Press, 1968. Second Edition. Four volumes. Uniformly bound in quarter green morocco, over marbled paper boards, spine with ruled bands, compartments ruled & embellished in gilt; title labels to second & third A fine bright set, handsomely bound.

First published between 1911 and 1920 in four volumes, Orpen’s magnum opus covers the period from the Norman invasion of Ireland in 1169 to 1333.

The work It remains a cornerstone of medieval Irish historiography. Orpen meticulously chronicled the political, social, and military developments of the Anglo-Norman period, drawing heavily on primary sources and legal documents. His work is notable for its depth, detail, and rigorous methodology, which set a new standard for historical writing in Ireland.