Claim: Máel Dúin mac Conaill is among the kings named by the Duan Albanach(Song of the Scots) although the general confusion of the sources makes any conclusion difficult and cannot be said with certainty.
Evidence: He is among the kings named by the Duan Albanach, following his brother Domnall Donn, which assigns him an improbable reign of 17 years. The Duan Albanach (Song of the Scots) is a Middle Gaelic poem Written during the reign of Mael Coluim III, it is found in a variety of Irish sources, and the usual version comes from the Book of Lecan and Book of Ui Maine. The general confusion of the sources makes any conclusion difficult, but while it is likely that Máel Dúin was co-ruler, with his brother Domnall Donn, of the Cenél nGabráin lands in Kintyre, it is not likely that Máel Dúin and Domnall were high kings of Dál Riata. Whether the lands of the Cenél nGabráin were subject to Ecgfrith of Northumbria, or whether they were dominated by Ferchar Fota of the Cenél Loairn, cannot be said with certainty.