But he soon finds his place in the never-ceasing obituary.

In two years after his justly famous exploit, he was slain by "Blacaire, son of Godfrey, lord of the foreigners." This event occurred on the 26th of March, A.D.

941, according to the chronology of the Four Masters.

The true year, however, is 943.

The chroniclers briefly observe, that "Ard-Macha was plundered by the same foreigners, on the day after the killing of Muircheartach."[207] Donough died in 942, after a reign of twenty-five years.