censussearchforms.nationalarchives.ie
1841 / 1851 Census Search FormsThe records now online can be searched. By census year, forename and surname of claimant, claimant's present address, forename and surname of claimant's mother and father, and townland/street, parish, barony and county where resident in 1841 or 1851. The Public Record Office of Northern Ireland. Ireland 1841/1851 Census Abstracts (Republic of Ireland) and Ireland 1841/1851 Census Abstracts (Northern Ireland). Search the 1841 / 1851 Census Search Forms. Click here to search.
http://censussearchforms.nationalarchives.ie/