D. E. Marsh

Douglas Earle Marsh (1862–1933) was the Locomotive, Carriage and Wagon Superintendent of the London, Brighton and South Coast Railway from November 1904 until his early retirement on health grounds in July 1911.

Marsh was born at Aylsham in Norfolk on 4 January 1862, and was educated at Brighton College and University College London. He worked for the Great Western Railway under William Dean becoming Assistant Works Manager at Swindon in 1888. In 1896 he became Chief Assistant Mechanical Engineer of the Great Northern Railway at Doncaster railway works under H.A. Ivatt, where he participated in the design of the Ivatt Atlantics.

Marsh succeeded R.J. Billinton as the Locomotive, Carriage and Wagon Superintendent at Brighton Works on 23 November 1904. Marsh's locomotive classes included two designs of Atlantic 4-4-2 (H1 Class and H2 Class), and four designs of 4-4-2T (I1, I2, I3, and I4). In 1910 he designed two 4-6-2T tank locomotives of the J1 and J2 classes. His least successful design was the LB&SCR C3 class 0-6-0 freight locomotives. Marsh also rebuilt many of his predecessors' locomotives with larger boilers thereby creating the A1X, B2X, C2X, E4X, E5X and E6X classes. In 1907 he introduced an example of the Schmidt superheater on one of his LB&SCR I3 class locomotives, with dramatically improved results. Whilst at Brighton he abolished the Stroudley yellow livery for passenger locomotives and removed the names from them.

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