In 765 Follaman is recorded as aiding Donnchad against Murchad, another of Domnall Midi's sons. Murchad was killed at Carn Fiachach, near present-day Rathconrath, fighting against Follaman and Donnchad.Doherty, "Donnchad"; Annals of Ulster, AU 765.5. Follaman was killed in 766, at which time he is called king of Mide.Annals of Ulster, AU 766.2; Charles-Edwards, Early Christian Ireland, p. 480. The Annals of Ulster call the killing "treacherous", while the Annals of Tigernach call it "deceitful". Since Donnchad was the main beneficiary—he became King of Mide after this—it has been suggested that the killing was on his orders.Herbert, "Vita Columbae", p. 38.
