Balmforth, John & Sons (1837)
Balmforth, John & Sons, Dod Lee, Longwood, Huddersfield, Yorks., cm (1837). [D] See T. Balmforth and John Balmforth & Sons of Longwood.
The original entry from Dictionary of English Furniture Makers, 1660-1840 can be found at British History Online.