Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,416 pages of information and 233,868 images on early companies, their products and the people who designed and built them.
of Ducksfoot Lane, London
1891 Released a catalogue of their dredgers. 
1891 Direct Acting Steam Pile Driver For Three Piles in a Row, made in Holland, introduced into Britain by Messrs Gwyn of Ducksfoot Lane 
of Budge Row, London EC4
Is this the same company?