Interesting this.
Lot's of Staniforths to be found, but not the exact same one your looking for. They seem to center around both the Cardiff and Sheffield areas. Below a survey of what I've found, maybe someone else may find a further lead in it. Most promising seem the AW Staniforth of Penarth and Bierton & Staniforth companies.
AW:
- A.W. Staniforth, a Colliery Manager at N.C.B. North Eastern Division coal mines
- A.W. Staniforth. Ltd., London, manufacturer of brain temperature probe in a 10 August 1986 paper in BJOG: An International Journal of Obstetrics & Gynaecology
- A. W. Staniforth Ltd, Penarth (Glamorgan, near Cardiff), distributor for Leyland Medical Products Ltd (tracheal tubes). Now Station Road Surgery at this address.
- A.W. Staniforth, manufacturer of a tracheotomy tube
Companies:
- Samuel Staniforth Ltd started 1864 as a forger of knive blades to the Sheffield; from '40 onwards production of all sorts of knives
- Bierton & Staniforth Ltd Sheffield, chemical (coating) company
- Same also listed as Cutlery Manufacturers
- Lots of Staniforths but no AW in a List of Marks granted 1624 to 1630
- Staniforth-HKB Steel in Rotherham
Cutlers:
- John Staniforth, 1540, cutler in in 'A Collection of Pedrigrees of the ancient family of Staniforth of Darnall'
- William Staniforth of Wincobank p. Ecclesfield (near Sheffield), cutler, in will of 1680, National Archives
- William Staniforth, ca. 1750, cutler, Hackenthorpe (Beighton near Sheffield)
- Thomas Staniforth, Hackenthorpe (Beighton near Sheffield), scythe/sickle mantifecturer
- G.H. Staniforth, cutler & tool dealer), 10 Church St. Cardiff listed in Slaters Commercial Directory of 1880
- Staniforth Joseph, saw maker, 35 Caroline st, idem