Alexander - I got a bit muddled, it was late when I was typing my post and was trying to remember what I'd just seen on the census.
By the way although FreeREG has John Day bapt. 24 February, Familysearch has it as 24 December, on their original site as extracted, and on their new site too, with references. I guess one lot of transcribers got it wrong, so unless I see the original (and Lincolnshire is a long way from where I live), or pay LDS to get hold of the microfiche, (and my nearest centre is a good hour's drive away and they won't take orders over the 'phone so it means a 2 hour round trip just to order the microfiche), I'll just accept that he was baptised in 1793.
Thanks for the link to the other thread Geoff. So it seems the place is spelt Osbournby but pronounced Osbenby.
Lizzie