In 1887, John Bartholomew's Gazetteer of the British Isles described Castlereagh like this:

Castlereagh.-- or Castlerea, bar., W. co. Roscommon, 82,081 ac., pop. 19,300.

How to reference this page:

GB Historical GIS / University of Portsmouth, History of Castlereagh, in and County Roscommon | Map and description, A Vision of Britain through Time.

URL: https://www.visionofbritain.org.uk/place/29550

Date accessed: 08th April 2026


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