Thanks for getting back to me Pam. I had a look on rootsireland but the 3 baptism records listed are too far outside the approximate year of birth for you Thomas to be relevant. I tried too to search for possible siblings of Thomas but with only John's name to go on, I could only limit the search to 35 records for Co. Wexford.
There are advantages and diadvantages with the parish of Kilmore.
(1) Records start early - 1752 for baptisms. However there are a lot of gaps in the series 1785-1790; 1794-1798; 1826-1827. Marriage records are also missing for most of the period between 1785-1790 and 1794-1798.
(2) Luckily, Wexford is one of the most comprehensively recorded counties for headstones. You could contact (as a long shot), Wexford Family History Centre and ask if they have access to the Memorials of The Dead vols 5-7. St. Mary's Kilmore is included here. You may be lucky and find a grave for John.
Wexford Famiy History Centre: http://homepage.eircom.net/~yolawexford/genealogy.htm
The Memorials are also available on the website of Eneclann as a CD but it is quite costly if yo have to buy it onl to see if one entry exists (which it may not): http://www.eneclann.ie/acatalog/brian_j._cantwell_s_memorials_of_the_de…
You could have a look at the 1901 Census entries for Kilmore and see what Neil entries are listed there then: http://www.census.nationalarchives.ie/pages/1901/Wexford/Kilmore/
Best wishes
Clare Doyle
Genealogy Support