Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,970 pages of information and 233,612 images on early companies, their products and the people who designed and built them.
of Dudbridge Ironworks, Stroud.
Presumably the business of H. G. Holborow
Maker of stationary engines. 
1894 Humpidge and Snoxell purchased the business of their neighbours Messrs. Holborow and Co., steam-engine manufacturers. The combined Company was named Humpidge, Holborow and Co.; James Dickerson Humpidge became chairman of directors.