no the "Cinderford" inmates were in the Workhouse located in Westbury on Severn !

and the records are held in Gloucester

Gloucestershire Archives, Clarence Row, Alvin Street, Gloucester GL1 3DW. Holdings include Guardians' minute books (1835-1930 with gaps); Ledgers (1835-1930, with gaps); Officers' service register (1850-1930); etc.

Gloucestershire Archives have the following Goal record :-

1847
william oliver
U
Littledean Parish
Q/Gc6/1
labourer
Gaol

could be father ( or uncle etc) to William 1850