— Kedagh, son of Connell, [224]-[226], [266]

— Rory, son of Connell, [224]-[226], [266], [275], [329], [335], [341]

— Connell Oge, [400], [401]

O’Mores, the, of Leix, [88], [125], [127], [130], [135], [140], [146], [167], [176], [177], [211], [258], [348], [399], [403], [408]

O’Mullally, Thomas, Archbishop of Tuam, [292]

O’Mulrian, or Ryan, of Owney in Tipperary and Limerick, [227], [266], [393]

O’Murrilly, John, Bishop of Ross, [293]

O’Neill, Donnell, [68]

O’Neill, Con More, chief of Tyrone, [118]

— Henry and Donnell, brothers to Con More, [118]-[120]