Mel Din mac Conaill is among the kings named by the Duan Albanach although the general confusion of the sources makes any conclusion difficult and cannot be said with certainty.
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 general confusion of the sources makes any conclusion difficult, but while it is likely that Mael Duin was co-ruler, with his brother Domnall Donn, of the Cenel nGabrain lands in Kintyre, it is not likely that Mael Duin and Domnall were high kings of Dal Riata. 
