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This is a complete list of all the BRENNAN's found in the Index to Griffith's Valuation of Ireland, 1848-1864 for all the parishes in the County of Laois (Leix/Queens County).   There are an estimated 366 BRENNAN's listed in the index as having owned or leased property in Co Laois during this period. While it is a well known fact that this index is both unreliable and incomplete it still remains the only form of census of this period as all other census were destroyed in 1922 in Dublin.

The Griffiths Valuation of Property was carried out in Laois in about 1850.

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To search the page:

Press the Control Key on your keyboard and 'F' at the same time

and type in the Parish name or a First Name and then press 'Find Next'

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