O'Connor, Batt (1929). With Michael Collins in the fight for Irish independence. P. Davies, ltd. p. 60. ASINB00086A93Y.
archive.org
Sir Bernard Burke and A. C. Fox-Davies, A Genealogical and Heraldic History of the Landed Gentry of Ireland, Harrison & Sons, London, 1912, pp. 31-32.[1]