Books

• The Ancestors of the McDonalds of Somerset (excerpt from Clan Donald DNA Project), by Donald M. Schlegel, 1998
• Annals of the Four Masters, 1632-1636, translated into English from the original Irish:
  • John O'Donovan, 1848-1851:
    • Volume 1 (from the earliest period to the year 902)
    • Volume 2 (years 903-1171)
    • Volume 3 (years 1172-1372)
    • Volume 4 (years 1373-1500)
    • Volume 5 (years 1501-1588)
    • Volume 6 (years 1589-1616)
  • Owen Connellan, 1845: Volume 3 (years 1171 to 1392) with extensive annotation
• Contributions to the Early History of Bryan McDonald and Family, by Frank V. McDonald, 1879
• The Fermanagh Story (excerpt) by Rev. Peadar Livingstone, Clogher Historical Society, 1969
• The History of Enniskillen, by W. Copeland Trimble, 1919
• The History of Ireland, by Geoffrey Keating (1569-1644), translated into English from the original Irish:
  • Translation 1, by David Comyn and Patrick S. Dinneen in the early 1900s
  • Translation 2, by John O'Mahony, 1857
• Historical Sketches of Monaghan, by Denis Carolan Rushe, 1895
• A History of Monaghan for 200 Years, 1660-1860, by Denis Carolan Rushe, 1921
• Irish Families, Their Names, Arms and Origins by Edward MacLysaght (1887-1986), Irish Academic press, 1957. Revised or reprinted in 1972, 1978, 1985, and 1991
• Irish Names and Surnames by Rev. Patrick Woulfe, Dublin,1923. Reprinted by Genealogical Publishing Co. in 1967, 1969, 1993
• Irish Pedigrees; or, the Origin and Stem of the Irish Nation, by John O'Hart
  • First Edition, 1876
  • Second Edition, 1878
  • Third Edition, 1881
  • Fourth Edition, 1887
  • Fifth Edition, 1892: Volume I and Volume II
• Kegley's Virginia Frontier, by F. B. Kegley, Southwest Virginia Historical Society, 1938
• Medieval Gaelic Sources, by Katharine Simms, Four Courts Press, 2009
• The Monaghan Story by Rev. Peadar Livingstone, Clogher Historical Society, 1980
• Saxons, Vikings, and Celts by Bryan Sykes, 2006. UK edition titled Blood of the Isles
• A Social History of Ancient Ireland by Patrick Weston Joyce, 1903: Volume I and Volume II
• Some Account of the Territory or Dominion of Farney, in the Province and Earldom of Ulster, by Evelyn Philip Shirley, 1845
• Special Report on Surnames in Ireland, by Sir Robert Edwin Matheson, 1909.
• The Story of the Irish Race: A Popular History of Ireland, by Seumas MacManus, 1921.
• Surnames, DNA, & Family History, by George Redmonds, Turi King, and David Hey, Oxford University Press, 2011
• The Surnames of Ireland by Edward MacLysaght (1887-1986), Barnes & Noble, Inc., 1969
• Varieties and Synonymes of Surnames and Christian Names in Ireland, by Sir Robert Edwin Matheson, 1890.

Periodicals

• The Clougher Record, "Families of Medieval Clones," by S. Ó Dufaigh (Rev. Joseph Duffy, Bishop of Clogher since 1979), Volume II, No. 2, 1959, pp. 385-414
• The Clougher Record, "The Origin of the Three Collas and the Fall of Emain," by Donald M. Schlegel, Volume XVI, No. 2, 1998, pp. 159-181
• The Clougher Record, "Reweaving the Tapestry of Ancient Ulster," by Donald M. Schlegel, Volume XVII, No. 3, 2002, pp. 689-749
• Duffy's Hibernian Magazine, "The Maguires of Fermanagh," by John Donovan, Volume 2, No. 10, April 1861