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Plenty and Son(s) of Eagle Iron Works, Newbury, Berks.
1865 formerly Plenty and Pain
1882 Partnership dissolved. '... the Partnership heretofore subsisting between us the undersigned, Edward Pellew Plenty the elder and Edward Pellew Plenty the younger, carrying on business as Engineers and Ironfounders, at Newbury, in the county of Berks, under the style or firm of Plenty and Son, has been dissolved, by mutual consent...'
1890 Partnership dissolved. '... the Partnership heretofore subsisting between us the undersigned Edward Pellew Plenty the younger, Henry George Fane and Cecil Fane, carrying on business as Engineers, at Newbury, in the county of Berks, under the style or firm of Plenty and Son, has been dissolved, by mutual consent...'
1890 Incorporated as a Limited Co.
Produced a range of two-stroke engines form 30 to 300 bhp with 1, 2, 3 and four cylinders 
1910 Produced a 15/20 cwt van.
1911 Two-cycle crude oil engine (Goedkoop design) 
Alfred Eberhardt, third son of Frederick Eberhardt, was trained as an engineer at Plenty & Son at Newbury, which made marine diesel engines.
1920 Lost the contract to make the British Kromhout engine to Day, Summers and Co
1920 Engine for Floating Crane 'Mammoth' for the Mersey Docks and Harbour Board
1933 Engine for British Waterways Dredger No 3
1933 - Image - Supplied the main machinery for the Twin Screw Tug Sir Guthrie Russell.