region=Ireland (free) Indexes to 19 plus some 1851 records for Antrim and Cork census are available on Ancestry: https://search.uk/search/category.aspx?
cat=35 (Subscription) In addition to the surviving Census records, information was extracted from the 18 census to support pension applications.
utm_source=fmp&utm_medium=email&utm_content=1018665-A-13-A&utm_campaign=fridays&utm_term=FMP-CAM-Fridays-17317-12-IE Ireland, Society of Friends (Quaker) congregational records https://search.findmypast.ie/search-world-records/ireland-society-of-friends-quaker-congregational-records?
utm_source=fmp&utm_medium=email&utm_content=1018665-A-13-A&utm_campaign=fridays&utm_term=FMP-CAM-Fridays-17317-12-IE https://search.findmypast.ie/search-world-records/ireland-society-of-friends-quaker-school-records? utm_source=fmp&utm_medium=email&utm_content=1018665-A-13-A&utm_campaign=fridays&utm_term=FMP-CAM-Fridays-17317-12-IE Reference can also be made to: Mitchell Brian, Genealogical Publishing Co. Websites offering national and multi-county indexes and images of parish registers.
Prior to this parish registers may contain the only surviving record of a particular individual or family and can supply evidence of direct links between one generation and the next (via baptismal registers) and one family and another (via marriage registers).
The following websites provide guidance on which parish registers still exist General Information https:// PRONI: https:// Church The List of Church of Ireland Parish Registers : https:// Us/library/registers/Parish Registers Catholic Parish Registers at the National Library of Ireland: https://ie/ Presbyterian Historical Society of Ireland: Methodist Historical Society of Ireland: Baptist Historical Society: Ireland, Society of Friends (Quaker) births https://search.findmypast.ie/search-world-records/ireland-society-of-friends-quaker-births?
dbid=48493 Various local indices and transcriptions have been produced by volunteers.
Many of these are to be found in the Irish Genealogy Project website Parish registers are the most important source of information on Irish family history prior to the commencement of the civil registration of births, deaths and marriages in 1864.
Records after 1922 are held in their respective offices.
It is also important to note that several church dioceses of all denominations have parishes on both sides of the border and some Ulster collections include records from Monaghan, Donegal and Cavan as Ulster counties pre 1922.