Ordnance Survey of Ireland 1824 – 1842
Townlands are the smallest official unit of administration in Ireland, followed by the Parish. Our townlands are ancient divisions and some have existed under other names since pre-Christian times.
By the early 1800s, local taxes were based on the valuation of townland units. These valuations were based on hopelessly obsolete information and poor mapping, and it was necessary for the boundaries of townlands to be mapped accurately in order to provide a framework for new valuations. There are 64,642 townlands in the Republic of Ireland, with over 1,000 in Offaly.
The Duke of Wellington authorised a survey of Ireland in 1824 in response to requests from his brother, the Marquess of Wellesley, who was Lord Lieutenant of Ireland at the time. The task was given to Lt Col Thomas Colby and officers and sappers of the Royal Engineers with civil assistants. First established as a military office, all the staff were military employees until the 1970s, when recruiting of civilians started.
It was decided to carry out an experimental triangulation survey in 1824, using Ireland as a test area. When completed the Irish survey would be a model for Great Britain and other areas of the Empire. The aim of the survey was to standardise and anglicise the representation of the Irish landscape. (more…)





In October 2014, following an introduction by Amanda Pedlow and Stephen Callaghan, an understanding was reached with the late Stephen McNeill, the then President and Micheal Byrne Secretary of the Offaly and Archaeology Society for them to assist and source interviewees in connection with my project to record persons talking about their memories of life around and about ‘The arrival of the rural’ in Offaly, to date I have recorded over 30 persons in Offaly. Since August 2016,utilising excepts from recordngs, a 45 minute audio/slide presentation which was shown by me to members of History Societies in Edenderry, Tullamore, Rhode, in March 2019 a fourth presentation was shown to members of the Ballinteer Active Retirement Association. A fifth presentation is scheduled for showing in Bury Quay, Tullamore in early 2020.