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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.