O'Donovans, the, [62]
O'Donovan, John, [66], [72], [107]; his Satires of Angus O'Daly, [491]; prosody, [540]; his edition of the Four Masters, [578] ff.; his work on the Brehon Law, [583]; on the word troithlighe, [475]
O'Dowdas, the, [33]
O'Driscolls, the, [58], [67], [535]
O'Dugan, John, mór, poet, [469] ff.
O'Duigenan, one of the Four Masters, [577]
O'Dunn, Gilla-na-naomh, poet, [447]
O'Flanagan, Theophilus, [28], [310], [505], [517]
O'Falvies, the, [65]