David Hi from another Bill. I too have ancestors in Northern Ireland, Belfast to be precise. You can see what little I’ve traced so far on my web site www.dennisbillfamilyhistory.co.uk .
I also have some marriage certificate copies that I obtained when searching in Ireland that do not seem to belong to my Bills (as yet) but may have some link to yours. The only one that refers to a John Bill is a marriage in Belfast between: William Bill, 25, carpenter, Belfast, father John Bill, farmer Jane Wilson, 22, Belfast, father George Wilson Dated 4 May 1846 – so too late to be your John Bill.
The others are: Marriage – Antrim - 11 May 1845, between: William Bill, full age, shoe-maker, Rathmore, father James Bill, shoe-maker Margaret Davidson, full age, Rathmore, father Thomas Davidson, Farmer
Baptism – Belfast – 1 Dec 1880 William Bill, father James Bill, mother Rose Bill (formerly Miller) The place of birth and residence appears to be Cloughfern.
Baptism – Belfast – 23 Feb 1879 William Bill, father David Bill, mother Martha Bill (formerly Seawright) Place of Birth 19 Glentilt Place, Belfast
I don’t suppose that any of this relates to you as they are too late but you never know. Best wishes Dennis