Woolf, Alex, "Macbeth" in Michael Lynch (ed.), The Oxford Companion to Scottish History. Oxford UP, Oxford, 2001.
Woolf, Alex, "Age of Sea-Kings: 900–1300", in Donald Omand (ed.), The Argyll Book.
Although their descent from Godred Crovan is through the female line, Alex Woolf believes the Clann Somhairle (Clan Donald and Clan MacDougall) or the Lords of the Isles can be regarded as a "cadet branch" of the Uí Ímair, as they apparently based their claim to the Isles on this descent (according to Woolf).
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