Deborah
These two look like the witnesses.
From the Sussex Marriage Index
Rogate, West Sussex, 28 Sep 1824
Richard GOSDEN, bach IOW Arreton
Elizabeth Ann CAPLIN, sp otp (B) wcop
This looks a possibility for the Richard and Ann named as parents of the Sarah bapt 1800
From the Sussex Marriage Index
Treyford cum Didling, West Sussex, 11 Apr 1791
Richard GOSDEN, of Rogate
Ann BRIDGER
There was also a Richard of Rogate married in 1779, but he was 50 and his bride was 39, so not likely to have a daughter c1800
Ian C