As in the U.S., Irish records are kept at the local level by both civil and church authorities. You must exhaustively search all U.S. and family sources that you can in an effort to identify where in Ireland your ancestor came from. The piece of information that you are seeking is the townland where your ancestors lived. The next best information is their parish, either civil or ecclesiastic. Once you have identified this information you can search Irish records (see research sources listed elsewhere in this section), including:
Records kept by ecclesiastic parish/diocese (Roman Catholic records generally begin in the 1800s)
These records were mandated beginning in 1864 (marriage, birth, death)
most Irish census data was destroyed on government order or by fires; 1901 and 1911 are the earliest surviving nation-wide Irish censuses and are available on-line at the National Archives of Ireland, county-based family history research centers in Ireland and on Ancestry.com. There was no census taken in 1921 because of the War for Independence. The First census for the Irish Free State was taken in 1926 and is scheduled to be released in 2027.
Because census information, one of the most valuable tools we have in genealogy research, is so limited in Ireland, we have to use other sources in our search, often referred to as Census Substitutes, including:
The Irish experience has had a profound impact on Connecticut's past, and its narrative spans all periods of the state's history and touches every one of its eight counties and 169 towns.