You can obtain a birth certificate from the General Records office - quoting all relevant information (in an earlier reply)

or by contacting

GloucestershireBDM

http://ww3.gloucestershire.gov.uk/bmd/

and can download an application form

1853

BROACHER Lucy Long
BROACHER
mother's maiden name: BANKS
District: Gloucester
Office: Gloucester Frampton
Register: 5
Entry: 471

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Call this baptism up on the above website - and quote all the information.

The service from this Office is very quick.

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The Gloucester Records Office is also well worth a visit.

http://www.ancestor-search.info/CRO-Gloucestershire.htm