Domnall Claen may have been a personal enemy of Amlaíb as he had killed Amlaíb's father-in-law Murchad mac Finn "deceitfully" in 972; Hudson, "Óláf Sihtricson"; Annals of Ulster, AU 972.2.
Domnall Claen podería ter sido inimigo personal de Amlaíb, ao ter asasinado ao sogro deste último de forma "traizoeira" en 972; Hudson, "Óláf Sihtricson"; Annals of Ulster, AU 972.2.