O'Higgins - Ó hUigin - d'Eguino
O’Rorke, T. (1889) “The History of Sligo Town and County Vol. II – Conclusion” (Dublin: Duffy & Company).
The National Genealogical Office (Dublin), MS 165. p. 396-399.
The Annals of the Four Masters, Book IV and V.
Funeral Entries, 1638, Ulster King of Arms, Dublin.
See McLysaght, E. (1935) “A Short Study of a Transplanted Family in the Seventeenth Century” (Dublin).
The Mayo Book of Survey & Distribution 1636-1703.
Records for The Moy Cemetery, Summerhill, Co. Meath.
Dictionary of National Biography 1885 and 1900.
Ricardo Donoso, (1941) “El Marquis de Osorno, Don Ambrosio Higgins” (Santiago: University of Chile Press).
Sepúlveda, Alfredo. "Sepulveda, Alfredo > "Bernardo O'Higgins: The Rebel Son of a Victory"." October 1, 2006. Society for Irish Latin American Studies, 2006. October 24, 2008
McCarthy, J.P. (2006). Kevin O’Higgins: Builder of the Irish State. Dublin: Irish Academic Press.
Grateful thanks to the staff at the Placenames Commission in Dublin for their assistance with the translation of Irish place names associated with the O'Higgins Clan.