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"Fr. Gwynn's text reprinted by kind permission of Cumann Seanchais Chlochaí, 'The Clogher Historical Society'"[t.p.].
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Cathal Óg Mac Maghnusa and the Annals of Ulster by Aubrey Gwynn. ISBN 0953389502. Published by The McManus Clan Association in 1998. Publication and catalogue information, links to buy online and reader comments.