O'Bruadar, David, poet, [592], [615]
O'Byrnes, the, [31], [544], [610]; their poets, [472] ff.; their generosity, [475]; ode to, [46]
O'Byrne, Rose, burnt alive, [474]
O'Byrne, Fiach, [475]
O'Callaghans, the, [32], [61], [64], [477]
O'Cassidy, Gilla Maduda, poet, [441], [446]
O'Cavanaghs, [60], [64], [68], [75], [473]
O'Cainte, Fearfeasa, poet, [516], [535]
Ocha, battle of, [579]