From this site:-

Record_ID: 7
Entry_Number: 6
Year: 1813
Month: Jul
Day: 25
Parents_Surname: PHELPS
Child_Forenames: MarFia
Fathers_Forenames: William
Mothers_Forenames: Nancy
Mothers_Surname:
Residence: Forest of Dean
Occupation: Labourer
Officiating_Minister: J. Probyn
Event: Baptism
Memoranda: Born May 11
Notes:
Register_Reference: P1 IN 1/7
Page_Number: 1
Parish_Chapel: Abenhall

MarFia is not a name that I am familiar with, it could be a best guess by the transcriber of a poor image or an error. It may be worthwhile viewing the original record.