Many thanks to everyone who replied, as well as offered advice. We do know that the birth in question was registered in England (and the baptism took place there, too), but had hoped that it was a practice to register it back in the home county as well. The reason for hoping this was because a ship manifest indicated Co. Tipperary as an additional birthplace, oddly enough (and indicates Irish as the "race," along with the British citizenship) All other six siblings were born in Ireland itself. It matters for obtaining Irish citizenry by descent (grandparent) but it doesn't look like it will work out, if the physical birth was in England.
Again, all the helpfulness is much appreciated!