Write to Wexford Borough Council (graves section) who are responsible for Crosstown Cemetery.
http://www.wexfordboroughcouncil.ie/ContactUsMaps/Provide the date of death of one of the persons buried so that a check can be made in the Register of Burial to identify the ‘section’ and ‘grave number’.
From that they can check the Register of Interments (example below) which will identify all the persons buried in the grave. Give your address and they will post you a copy of the entry.
My understanding is that a single grave will take a maximum of three adults. In the example below of the three adults and two infants in grave 106 only two of the adults are named on the headstone so surprises can occur.
On the subject of the burial records I recently had the following reply from the Wexford Borough Town Clerk
“Digitising the records for Crosstown Cemetery is part of the Council's review of services at Crosstown. Obviously, such a project would require substantial resources, which, as you know are not available to the Council at present. However, we intend to make contact with the local Historical Society to see if they could help us with this project. There may also be a possibility that students employed for the summer could help with the project”.