I just looked at it again, and yes, the next house has Eliz Oates 15 and Jane Oates 25 Ind, both marked Y. Eliz had an occupation that looks like "Coufr" but I haven't a clue what that is. We know that Eliz Gelling was Oates at her marriage back in 1795, so it might be a related family probably 2 generations younger.

Re the Female Servant in the Gelling household named Eliz Kissack, the age might actually be 20. That's more fitting with FS. 10 is too young and 60 is too old.

Brian Lawson's will index has wills for both John Gelling (3 choices ca 1854-5) and Elizabeth Gelling (1855). They could be very useful, if we can find out what they say.

John was 87 b Marown in 1851 and 90 at his burial in 1854. Working back, he'd be born about 1764. Sure enough, there is an IGI baptism for a John GELLING son of John GELLING and Margt QUILLIAM 26 Feb 1764 Marown. There are others in the same time period in other parishes, but he is the only Marown one. Thank goodness he lived so long! Given all this, we sure would like them to be the winning couple to be parents of your William.