Landed Estates
NUI Galway

O'Brien (Kilcor)

The O'Briens were settled in the Castlelyons locality of county Cork from the 17th century. At the time of Griffith's Valuation Cornelius O'Brien held land in the parish of Castlelyons. He was married to Katherine Coppinger of Rossmore and they had a daughter, Cornelia. In December 1854 the Kilcor estate amounting to 1,427 acres was advertised for sale in the Encumbered Estates' Court. It was held under a lease dated 1666 from Richard Earl of Barrymore to Donogh O'Brien of Coylnacurra (Kilcor), county Cork, for 1,000 years. The rental includes a lithograph of Kilcor Castle, which is described as a modern and picturesque building in good repair. The Freeman's Journal gives details of the purchasers. In the 1870s Cornelius O'Brien of Fermoy owned just 10 acres in the county. The website gives details of marriage connections between the O'Brien and Coppinger families.


Name Townland Civil Parish PLU DED Barony County Map Ref
Kilcor Castle Kilcor North Castlelyons Fermoy Kilcor 136 Barrymore Cork OSI Ref: W865 909
OS Sheet: 45
Discovery map: 81

Archival sources

  • Encumbered Estates’ Court Rentals (O’Brien), O’Brien, 15 Dec 1854, Vol 32 (57), MRGS 39/015, (microfilm copy in NUIG); National Archives of Ireland
  • Pyne Papers, 23 deeds mainly concerning lands in Co. Cork in which members of the Pyne family were parties, other parties include members of this family, 1783-1895. D 7194-7219; National Library of Ireland

Contemporary printed sources

Modern printed sources