Donn Cothaid mac Cathail, King of Connacht, died 773.[1]
Donn Cothaid was a King of Connacht from the Ui Fiachrach Muaidhe branch of the Connachta. He was the great-grandson of Dúnchad Muirisci mac Tipraite (died 683).[2] He was the last member of this branch to hold the throne of Connacht and ruled from 768 to 773.