Good Morning Robert
I have had a look at whether I could find any other candidates for your Daniel Jarvis in Oxfordshire and at the moment I can't - however many members of this family seem to be non-conformist which means that baptisms at least don't show up in the church register transcriptions that I have. I have to admit I like the fact that he was born in or near Milton as the Samuel we have been looking at seems to have come from there.
I have found (in my people in wills index) a reference to a will of Nathaniel Jarvis gent of Deddington (same sort of area) which was proved 1780 - in it he names his brother Thomas and Thomas's two sons William & Samuel, his brother William and William's son John and his brother Richard and Richards children Richard, Martha, Mary and Nathaniel, - again this will is at Oxford Records Office. There seems to be several Jarivis's at Deddington -mostly involed in the carpentry/joinery trade - which doesn't fit too well with you Daniel being a Tailor.
My Paytons dissapear/stop in the Abingdon area - John Payton married 1740 in Abingdon is given as 'of East Ilsley' but there is no sign of him or any Paytons there at the time and I can't seem to find a baptism for him - there is one (Painton) which would have fitted very well in Denchworth but when I looked at the registers that one was buried as a baby a couple of months later. I still think that my John was probably a child of those parents but I can't find any way to prove it. The coat of arms is that of the Peyton/Payton family of Cambridge - I have no right to it at all, but it is a nice way to mark my posts and help people remember if the have 'spoken' to me before, you can add one or even a picture of something by using the settings in My Profile - let me know if you want any help on this.
I will think over your Jarvis's today and see if I have any other stuff which might shed any light but I think we may be coming to the end of what I have that can help - still you never know.
Debbie