The Annals of Tigernach record that “Ruaidri son of Tadg son of Lorcan” was blinded in 1036 by “Mael na mbó”... The Annals of Tigernach record that “Diarmait son of Mael na mbó king of the Húi Cennselaig” plundered “Colomb cille´s Maein (Moone), Dísert Diarmata and my Senóc´s Mugna and Clonmore” in 1040. The Annals of Tigernach record that “Echmarcach son of Ragnall king of the Foreigners went oversea” in 1052 and “the son of Mael na mbó assumed the kingship after him”, adding in a later passage that “the son of Mael na mbó took the kingship of Dublin by force” in 1053.
King of Leinster. High King of Ireland. The Anglo-Saxon Chronicle records that Harold Godwinsson and his brother Leofwine, sons of Godwin Earl of Wessex, sought refuge with him in 1051 following the family's disgrace. Orderic Vitalis records that “duo filii Heraldi regis Angliæ” had fled “ad Dyrmetum regem Hiberniæ” after their father was killed and, with his support, landed at Exeter with 66 ships, ravaged the interior of the country, but were defeated by “Briennius Eudonis comitis Britanniæ minoris filius et Guillelmus Gualdi” and fled back to Ireland.
The Annals of Tigernach record that “Diarmait son of Mail na mbó, king of Britons and the Hebrides and Dublin and Mug Nuadat´s Half [southern Ireland]” was killed in 1072 by “Conchobar Húa Mael-Sechlainn in the battle of Odba”. The Annals of Ulster record the death in 1072 of "Diarmait son of Mael na mBó king of Laigin and the foreigners…7 Feb” killed in battle by “Conchobar ua Mael Sechlainn king of Temair”. 1
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