I have just learned of the Ireland Genealogy website. (Nothing to do with IGP) The website contains the results of pension applications. If a person was applying for a pension, they had to supply information from the 1841 or 1851 census to prove they were alive then. The census records were still in existence at that time of the requests for a pension. This website will let you search (for free) for a person who might have been old enough to apply for a pension. If you find someone it is 2 pounds to look. About $3.40 In theory the parents names would be given. So, a way to try and access those missing census records. http://www.ireland-genealogy.com/ I just wanted to let you know. It might help. Christina again not affiliated with this site