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Stephen Lewin of Lewin's Engineering Works, Poole Foundry, South Road, Poole, Dorset.
formerly Lewin, Wilkinson and Co
1874-82 Built a number of small locomotives for standard and narrow gauge working.
1874 1' 10" gauge locomotive used by the London Lead Company for working at Cornish Hush lead mine, Weardale. 
1875 22" gauge locomotive for a lead mine, featured in 'The Engineer' 
1876 Exhibitor at the Royal Agricultural Show at Birmingham but could show little of his vertical engines and boilers due to a recent fire at the works.
1877 Two single-cylinder engines named 'Malt' and 'Hops', made for Guinness and Co's Dublin brewery. 22" gauge. Capable of hauling a 16 ton load on a 1 in 30 gradient. The footplate could be readily removed to allow the engines to be taken to different levels by the hoists in the brewery 
1884 Stephen Lewin and James Welman of Poole Foundry declared bankrupt.
For a history of the firm and its products, see 'Stephen Lewin and the Poole Foundry'