Without giving us any name(s) dates, place of birth/census etc - we can't help - so any information you have please let us know.

Barnwood St Lawrence and Wotton Under Edge are not covered by the Forest of Dean area records - Any connections with the Forest?

Gloucestershirebdm

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

Is a useful site, as most births give the mother's maiden name.

FamilySearch

https://familysearch.org

Gloucestershire Family History Society

http://www.gfhs.org.uk

Genuki

http://www.genuki.org.uk