We always welcome your tips, stories, and topical ideas for blog postings. IGSI board member and blog-reader Fern Wilcox emailed us during her trip in Ireland to tell us how easy it is to search the online Tithe Applotment Books.  Here's a very good description of the project from the Irish National Archives website: The Tithe Applotment Books are a vital source for genealogical research for the pre-Famine period, given the loss of the 1821-51 Census records. They were compiled between 1823 and 1837 in order to determine the amount which occupiers of agricultural holdings over one acre should pay in tithes to the Church of Ireland (the main Protestant church and the church established by the State until its dis-establishment in 1871). There is a manuscript book for almost every civil (Church of Ireland) parish in the country giving the names of occupiers of each townland, the amount of land held and the sums to be paid in tithes. Because the tithes were levied on agricultural land, urban areas are not included. Unfortunately, the books provide only the names of heads of family, not other family members. The books have been digitally imaged, and a database giving surname, forename, county, parish and townland created. All of these fields can be searched, and there is also a browse facility, which allows users to survey entire parishes and townlands. The population of Ireland was recorded in 1841 as 8.2 million. It would have been somewhat less than this during the 1820s and 1830s, when the Tithe Applotment Books were compiled. The books for Northern Ireland are in the held in the Public Record Office of Northern Ireland, but there are microfilm copies in the National Archives which can be consulted in our Reading Room. The Tithe Applotment Books are the first in a series of National Archives records of genealogical interest to be digitised by the Genealogical Society of Utah in partnership with the National Archives, and placed online free to access. Others will follow over the coming years; the next will be the Calendars of Wills and Administrations, 1858 - 1922. Their search facility works great! http://titheapplotmentbooks.nationalarchives.ie/search/tab/index.jsp I searched (only) by surname and townland in County Tipperary and found intriguing 1826 entries that suggest a family relationship and definitely bear more research. In County Mayo, I found the townland I'd been researching as "Foxford" shown as "Fouford." That may be either a transcription problem or a common spelling? In County Roscommon, I quickly found a few townlands where Quinns and in-law-surnamed families both resided during this critical pre-1840 time period. VERY INTERESTING!    Thanks, Fern, for directing us to take another look at Tithe Applotment Books!