A possible 1871 census for John Watson (for some reason, I cannot find it on FamilySearch):
John Watson, aged 36 (born c.1835), file smith and bird preserver, born in Ranmoor, Sheffield.
Maria Watson, aged 34 (born c.1837), born in Barlow, Derbyshire.
John Watson, aged 18 (born c.1853), file smith, born in Hallam, Yorkshire.
also Ann Watson (born c.1858) and Henry (born c.1868).
The family is living in Ecclesall Bierlow. The names and occupations match (both John and his father, John Sr., are described as file forgers on John's marriage certificate), but it is a rather common surname, so cannot be 100% it is the correct John.
Queenie
