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I would like to know the source for the statement that Ruaidrí's mother was Caillech Cáemgein. Céitinn says that Cailleach Dhe, daughter of O Heidhin, was the mother of both Muirchertach Ua Briain and of Ruaidhri, although Chronicon Scotorum says that Derbforgaill, daughter of Tadc ua Gilla Pádraic,was the mother of Muirchertach Ua Briain.--Montaillou (talk) 13:43, 14 March 2010 (UTC)[1][reply]
