Although Whitchurch records are on the Forest of Dean records - I can't see this baptism, but it is on the CLDS

Margaret CHESTER - christened 6 May 1746 - at Whitchurch, Shropshire - parents: Thomas & Margaret

As girls could marry at 14 and boys at 12 - this could be a possible.

CLDS

Thos. CHESTER married Margt HIDE - 1 June 1730 Bisley, Glos

I think the surname appears to be CHESTER on a number of other records from CD's - Fod has 60 records for this surname