Landed Estates
NUI Galway

O'Conor (Dundermot)

A branch of the O'Conor Don family who resided at Dundermot for 2 generations in the 19th century. In 1683 Hugh O'Connor was granted over 1,800 acres in county Roscommon, including the castle of Ballyntobber and lands at Laraha and Ross. At the time of Griffith's Valuation, Patrick O'Conor held land in the parishes of Kilcroan and Kilbegnet, barony of Ballymoe, county Galway, and in the parishes of Oran and Drumatemple, barony of Ballymoe, Lissonuffy, barony of Roscommon, county Roscommon. Some of this land was held from the Blakeneys and some of the land in the parish of Oran was offered for sale by the Brownes of Castlemagarrett, county Mayo in May 1852. His brother Roderic also held land in the parishes of Oran and Drumatemple. In 1851 some of Roderick O'Connor's land in the parish of Drumatemple was advertised for sale in the Encumbered Estates' Court by his assignee Christopher Hume Lawder. From 1853 Patrick O'Conor held Laragh and Ross, which adjoined the demesne of Dundermot, from Arthur Irwin Mahon. Mahon advertised these lands for sale in May 1856. Patrick O'Connor and Charles O'Connor also held extensive lands at Rathconor and Tonlegee, parish of Kilbride, barony of Ballintober South at the time of Griffith's Valuation, previously part of the Croghan estate. In the 1870s Hussey records that the late Patrick Hugh O'Conor of Dundermot owned 2,435 acres in county Roscommon and his brother Nicholas O'Conor owned 810 acres. Nicholas O'Conor, a prominent British diplomat, sold Dundermot. The estate of his daughter Fearga O'Conor was vested in the Congested Districts' Board in March 1915.

Houses

Name Townland Civil Parish PLU DED Barony County Map Ref
Corrastoona More House Corrastoona More Drumatemple Castlerea Ballintober 60 Ballymoe Roscommon OSI Ref: M737 719
OS Sheet: 34
Discovery map: 40
Dundermot Dundermot Drumatemple Castlerea Ballintober 60 Ballymoe Roscommon OSI Ref: M701 719
OS Sheet: 34
Discovery map: 39
Laragh and Ross Laragh and Ross Drumatemple Castlereagh Ballintober 60 Ballymoe Roscommon OSI Ref: M720 718
OS Sheet: 34
Discovery map: 39

Archival sources

  • Family correspondence and papers, 19th century. OCON; Cambridge University: Churchill Archives Centre
  • Encumbered Estates’ Court Rentals (O’Brien), O’Connor, 8 Oct 1851, Vol 11, MRGS 39/004, (microfilm copy in NUIG); National Archives of Ireland
  • Encumbered Estates’ Court Rentals (O’Brien), Mahon, 6 May 1856, Vol 39, MRGS 39/018, (microfilm copy in NUIG); National Archives of Ireland
  • Copy confirmation of arms to Nicholas Roderick O’Conor, Minister in Bulgaria, son of Patrick O’Conor of Dundermott, 4 Sept 1890. GO MS 110: 124-125; National Library of Ireland
  • Dundermot photos. 013/055; Irish Architectural Archive

Contemporary printed sources

Modern printed sources