Landed Estates
NUI Galway

McMahon (Kilfenora)

This family were mainly based in Dublin where they followed legal, military or diplomatic careers. The first baronet, Sir William MacMahon (1776-1837), was Master of the Rolls in Ireland. Sir Beresford Burston MacMahon, 2nd baronet, married Marie Catherine, daughter of Sir Robert Bateson of county Down. The representatives of Sir William MacMahon held an estate mainly in the parishes of Kilfenora, barony of Corcomroe and Oughtmama, barony of Burren, county Clare, in the mid 19th century. In the 1870s Sir William Samuel MacMahon, 3rd baronet, of Fecarry House, Mountfield, Omagh, county Tyrone, owned 4,671 acres in county Clare and 16,326 acres in county Tyrone. His grandfather, the 1st baronet, had provided for the purchase of lands in county Tyrone in his will.

Associated Families


Name Townland Civil Parish PLU DED Barony County Map Ref
Ballyshanny Ballyshanny House Kilfenora Ennistimon Kilfenora 49 Corcomroe Clare OSI Ref: R188 950
OS Sheet: 9
Discovery map: 51

Archival sources

  • Original sketch map of Ballybreen & other lands, Co Clare, part of estate of Rt Hon Sir W. McMahon, not dated. 15 B. 9(6); National Library of Ireland
  • Pedigree of MacMahon of Clonderala, Coogy, Tonogh, Ballykielty, Co Clare & of Bohemia, 1472-1770. GO MS 165: 101-104; National Library of Ireland
  • Pedigree of MacMahon of Clonderala, Coogy, Tuogh, Clenagh, Leadmore, Co Clare & of Mondrenhy, Co Tipperary, c 1450-1764. GO MS 164: 17-18 ; National Library of Ireland
  • Pedigree of MacMahon of Clonderala, of Portugal & of Autun, France, 1472-1749. GO MS 162: 38-39; National Library of Ireland
  • Sketch map of Ballybrien and Kilkarka & other lands, parish of Kilfenora, barony of Corcomroe, estate of Rt Hon Sir William McMahon bart, no date. 15 B. 9(6); National Library of Ireland
  • Minute of contract re purchase of lands, George Lysaght with Sir William McMahon, 11 Apr 1820. E.J. French solicitor's collection, Small Accessions Index 8, D.3279; National Archives of Ireland
  • Copy of grant of arms to descendants of John McMahon, Patentee Comptroller of port of Limerick & to his son, Rt Hon William McMahon, Master of the Rolls, 5 Dec 1814. GO MS 106:68; National Library of Ireland
  • McMahon Collection, IE CLCCA/PP/EST/1; Clare County Archives

Contemporary printed sources

Modern printed sources