Eoghan Ruadh mac Uilliam Óig Mac an Bhaird
See also references for related subjects.
McGrath, Cuthbert, “Eoghan Ruadh mac Uilliam Óig Mhic an Bhaird”, in: O'Brien, Sylvester [ed.], Measgra i gcuimhne Mhichíl Uí Chléirigh .i. Miscellany of historical and linguistic studies in honour of Brother Michael Ó Cléirigh, O.F.M., Chief of the Four Masters, 1643-1943, Dublin, 1944. 108–116.