The census records for 1860, 1870 show an Elizabeth Baldwin as born in "Harpury" (Hartpury) and checking the baptism records here comes up with the following which seems a good possibility:

Record_ID: 177578
Entry_Number:
Year: 1785
Month: May
Day: 22
Parents_Surname: HOLDER
Child_Forenames: Elizabeth
Fathers_Forenames: James
Mothers_Forenames: Sarah
Mothers_Surname:
Residence:
Occupation:
Officiating_Minister:
Event: Baptism
Memoranda:
Notes:
Register_Reference: P165 IN 1/2
Page_Number: 49
Parish_Chapel: Hartpury

Regards
-Colin