Namesakes
Donnchad Midi
(a.k.a. Donnchadh) (m) 733-797 
Irish Kings 770-797
Donnchad Donn
(a.k.a. Donnchadh) (m) ?-944
Irish Kings 919-944
Donnchad mac Briain
(a.k.a. Donnchadh) (m) ?-1064
Irish Kings 1024-1063