Thomas Spencer of Church Street, Bilston (1828), iron founder
of the Moat Forge, Tipton (1848)
of Vulcan Iron Works, West Bromwich (1851)
1841 Thomas Spencer 35, iron master, lived in West Bromwich with Jane Spencer 40
1848 'At the Moat forge, belonging to Mr. Thomas Spencer, every description of hammered iron is made for marine engines and other uses' 
1851 Vulcan Iron Works, West Bromwich. Thomas Spencer. "Manufacturers of railway rims and axles and every description of hammered iron". Sole manufacturers of Chambers patent wrought iron railway wheels.
1853 of Vulcan iron Works, West Bromwich
1853 onwards, of Clough Hall Iron Works, Kidsgrove, near Stoke-upon-Trent.