Landed Estates
NUI Galway

O'Conor (Milltown/Milton)

The O'Conors of Milltown, barony of Castlereagh, county Roscommon, share a common ancestry with the O'Conors of Dundermott and appear to have been resident at Milltown from the mid 18th century. Gormley states that the O'Conors acquired this estate on the death of Gerald Dillon of Dillon's Grove who had been granted it and whose daughter Mary had married Thomas O'Conor. The Milltown branch held lands in the parish of Kilcroan, barony of Ballymoe, county Galway, in the mid 1850s. Roderick O'Conor was one of the principal lessors in the parish of Kiltullagh, barony of Castlereagh at the time of Griffith's Valuation. In the 1870s Roderick Joseph O'Conor of Milltown, Tulsk, county Roscommon, owned 384 acres in county Galway and 1,496 acres in county Roscommon. In 1909 the O'Conors were negotiating with the Congested Districts' Board for the sale of almost 2,000 acres of their estate in counties Roscommon and Galway.


Name Townland Civil Parish PLU DED Barony County Map Ref
Milltown Milltown Baslick Castlerea Castleteheen 63 Castlereagh Roscommon OSI Ref: M777768
OS Sheet: 27
Discovery map: 40

Archival sources

  • Copy of confirmation of arms to Aylward Robert O’Conor of Somerton Lodge, Dun Laoghaire, great grandson of Roderick O’Conor of Milton, 4 July 1932. GO MS 111d: 85-86; National Library of Ireland
  • S.R. & C. Walker, solicitors' collection (1962), contains abstract of title Roderick J. O'Connor to Milton etc, co Roscommona & Ardagh etc, co Galway, (documents cited from 1759) with 2 rentals 1868. M.6104; National Archives of Ireland

Contemporary printed sources

Modern printed sources