Ruaidhrí Mear was a son of Taichleach mac Niall Ua Dubhda. No dates exist for his
reign, but Araile do fhlathaibh Ua nDubhda places him between
Aodh mac Muirchertach Ua Dubhda (died 1143) and
An Cosnmhaidh Ua Dubhda, called him ri o Roba go Codnuigh("king from [the rivers]
Roba to Codhnach").
Genealach Ua fFiachrach Muaidhe, 263.8 (pp. 596–97), 264.5 (pp. 598–99); Araile do fhlathaibh Ua nDubhda/Some of the princes of Ui Dhubhda, pp. 676–681; Leabhar na nGenealach:The Great Book of Irish Genealogies,
Dubhaltach Mac Fhirbhisigh (died 1671), eag.
Nollaig Ó Muraíle, 2004–05, De Burca,
Dublin.