This is the info that IGC has which I hope is helpful:
Name John Osborne
Other Names Thomas Osborne
Address1 Bridge Street
Address2 26 Bridge Street
City/Town Evesham
County Worcestershire
Country United Kingdom
Trade Gun maker
Dates 1850-1900?
Notes
John Osborne (b. 1819) and his son, Thomas (b.1848) were recorded as whitesmiths, ironmongers and bell hangers at various times between 1850 and the mid-1890s. In the censuses they never described themselves as gunsmiths or gun makers.
They were in Bridge Street, Evesham, Worcestershire, from 1850 to the mid 1890s, then reportedly at 26 Bridge Street although the 1891 census records John and Thomas living at 36 Bridge Street.
Tim