In 1850 Thomas Frewen of Brickwall House, Sussex, purchased two townlands in the parish of Omey, barony of Ballynahinch, county Galway from the sale of the D'Arcy estate for sporting purposes. The Frewens were also supporters of the Irish Church Missions. They later acquired two townlands in the parish of Moyrus from Samuel Jones and Munga in the parish of Ballindoon from John Geraghty, who had a 999 year lease from the O'Neills. In 1870 Moreton Frewen inherited his father's estate of 2709 acres in Connemara. Moreton Frewen was a colourful personality who married one of the Jerome sisters of New York and at one time had one of the largest cattle ranches in the United States of America. In 1917 he transferred his Connemara estate to his nephew, Layton Frewen, from whom it was eventually purchased by the Land Commission. A distinctly related branch of this family had purchased the Adderley estate at Innishannon, county Cork, by the mid 19th century.
- Archives of Frewen Family of Brickwall in Northiam. FRE; East Sussex Record Office
- Earnán de Blaghd Papers, including letters from Colonel Frewen to Tim Healy re a visit to Connemara, 1929. MS 20,712; National Library of Ireland
- Copy of statement relative to the Galway rectories purchased by Thomas Frewen in 1855, from Tuam Diocesan Archives. Microfilm P5406; National Library of Ireland
Contemporary printed sources
- PARLIAMENTARY PAPERS. ''Return of owners of land of one acre and upwards, in the several counties .... in Ireland''. HC 1876, LXXX: 295
- HUSSEY DE BURGH, U. H. ''The Landowners of Ireland. An alphabetical list of the owners of estates of 500 acres or £500 valuation and upwards in Ireland''. Dublin: Hodges, Foster and Figgis, 1878. [available online at www.askaboutireland.ie] : 172
- PARLIAMENTARY PAPERS. ''Return of names of proprietors and area and valuation of properties in counties in Ireland, held in fee or perpetuity or long leases at chief rents,'' 1876. (412) LXXX. 395: 148