Oilgate, Enniscorthy, Wexford, Ireland help please.

Hi. My ggfather, Michael Howard was baptised in 1869. On his military attestation he lists his place of birth as the above.  I have all his siblings bap records, some say, Carranroe, some St Mary's etc.

Some of his siblings died really young either first/second third year of birth.  My query is, would anyone know where they were laid to rest?  Then I can look on Find a Grave maybe.

Thanks in advance.

Steph