Conor O'Donnell 1333 Lord of Tirconnell. A dispute arose afterwards between Conor and his brother Art, concerning the lordship. Art was soon killed by Conor in combat. 1340 Conor O'Donnell, Lord of Tircennell, proceeded with his troops into Connaught. AFM 1342 Conor, the son of Hugh, son of Dennell Oge O'Donnell, Lord of Kinel-Cennell, Lower Cennaught, Fermanagh, Kinel-Moen, and Inishowen, and worthy heir to the monarchy of Ireland by reason of his personal form, wisdom, hospitality, renown, discretion, and ingenuity, magnanimity, intellectuality, valeur and prowess, and his piety and charity, was slain by his brother, Niall O'Donnell, who attacked him at night in his own fortress at Murbhach (3 miles southwest of the town of Donegal): and Niall himself assumed his place.