 Muirchertach was a hardened warrior, and finally met his death in battle in 943 at the hands of Blácaire mac Gofrith, King of Dublin.His obituary in the "Annals of Ulster" calls him "the Hector of the western world", and the "heir designate of Ireland".Muirchertach's son Domnall ua Néill was passed over for the succession on Donnchad Donn's death the year after Muirchertach's, but eventually became High King following the death of Donnchad's successor Congalach Cnogba in 956.