Máel Dúin mac Áedo Alláin
Máel Dúin mac Áedo Alláin (died 788) was a King of Ailech and head of the Cenél nEógain branch of the northern Uí Néill.[2] Expeditions by the new high king, Donnchad Midi (died 797) of Clann Cholmáin of the southern Uí Néill, to assert his authority in the north are recorded in 771 and 772.[4] Authority in the north during the time of Donnchad Midi appears to have been held by the rival Cenél Conaill in the person of Domnall mac Áeda Muindeirg (died 804) who had the title King in the North in the annals in 779.In 787 however, Máel Dúin defeated Domnall and the Cenél Conaill in the battle and wrested the overlordship of the north from him.[6] His son Murchad mac Máele Dúin (died 823) was a King of Ailech.