church records do exist got this by googling ballagh wexford havent managed to find microfilm no for national archives will have a look later.
baptisms from oct 1837 to dec 1853
same 1875 to dec 1880
same 1863 to 1880.
marriages from nov 1837 to 1852
same nov 1874 to 1878.
no burials listed.
edit comes up as ''the ballagh''