Landed Estates
NUI Galway

O'Reilly (Heath House)

Family papers, including a history of Myles John O'Reilly's estates in counties Sligo and Roscommon and a rental, were presented to Trinity College, Dublin, in 1954 by Colonel Beresford Mundey, a grandson of Myles George O'Reilly 'The O'Reilly'. The O'Reillys resided at Heath House, county Laois from the 18th century and intermarried with the Knox family of Moyne, county Mayo and with the Beresford family, Lord Decies. Lands in counties Roscommon and Sligo belonging to "The O'Reilly"'s estate were offered for sale in the Landed Estates Court in November 1873. The sale notice indicates that some of the lands in Sligo were held under a 1680 lease from Nicholas, Earl of Carlingford. In the 1830s the O'Donnell family of Greyfield were agents for the O'Reillys in the Boyle area.

Associated Families


Name Townland Civil Parish PLU DED Barony County Map Ref
Greyfield Greyfield Kilronan Boyle Aghafin 39 Boyle Roscommon OSI Ref: G927 111
OS Sheet: 4
Discovery map: 26

Archival sources

  • O'Reilly of the Heath House, Co Leix, family correspondence and papers. MSS 3391-3412; Trinity College Dublin
  • O'Reilly Papers in TCD. Microfilm P.1029-1031; National Library of Ireland
  • Landed Estates' Court Rentals (O'Brien), O‚ÄôReilly, 7 November 1873, Vol 112, MRGS 39/051, (microfilm copy in NUIG); National Archives of Ireland
  • Rentals of the lands in counties Sligo & Roscommon of Myles J. O'Reilly, 1849-1864. Also map of Corderry, Co Roscommon, surveyed 1821. O'Reilly Papers, Microfilm copy P1028.; National Library of Ireland

Contemporary printed sources

Modern printed sources