Dear jmg
There is an Ann daughter of John OLIVER UPTON of Ringmer, lab, and his wife Caroline bapt at Ringmer on 15 Apr 1821. Members of the family use the surnames OLIVER, OLIVER UPTON and UPTON interchangeably. She has a younger brother James bapt in 1823, but then her mother Caroline was buried at Ringmer aged 25 on 4 Jun 1824.
You should be able to see whether this is the right Ann from her marriage certificate, as she married after 1837. Her maiden name should also be on all her children's birth certificates.
Previous generations of the family lack baptisms, except that this Ann's father was baptised as a young adult. They might have been Baptists, or they might more credibly just have been a family who did not bother.
This family lived in a house at Ashton Green, Ringmer. The site is now occupied by a house called the Old Black House, but all the current house may date from after their occupation (mostly a Victorian cottage with a 20th century extension, and in the 1950s used by the comedian Cyril Fletcher). I tried to paste below the family info I have from this house file, but it won't let me - may be too long. You could try emailing me at johnkay56 at gmail.com and I will email back the info.
