16th April 1857
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The primary valuation of Ireland or Griffith's Valuation is a useful Census substitute for 19th-century Ireland. To confirm whether an ancestor could possibly be the individual listed, it is helpful to know the survey completion date for a parish (or the part of it that fell within the Poor Law Union surveyed).

A total of 301 volumes were published between 1847-1864 and the precise completion date for this PLU was recorded on the title page of Volume #250.

This Primary Valuation, in addition to the barony of Castlereagh, covered eastern parts of the barony of Costello in Co. Mayo and the western parishes of the barony of Frenchpark, Co. Roscommon (including a handful of townlands in Elphin and Shankill) and the Barony of Ballymoe. 

Click here to view Griffith's Valuation on AskAboutIreland.ie.

Each Civil Parish covered by this Union (in whole or in part) has been linked to this timeline and can be accessed by clicking on the links above. 

To determine if your townland or parish of research fell within this union, SEE Castlerea WORKHOUSE


  • My great grandfather Thomas Nevin is listed on the 1857 Griffiths Valuations under Cloonybeire, but other than that no nothing else about him. His son Thomas Nevin, my grandfather is listed on the 1911 Ireland census living in Corbo. Any help would be appreciated.

    Thank you,

    Mary Cilmi (née Nevin)


    Thursday 10th December 2020 05:32PM

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