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John William Trowsdale (c1870-1930), managing director of Round Oak Steel Works
1930 Obituary 
JOHN WILLIAM TROWSDALE died on March 17, 1930, at Brierley Hill; he was sixty years of age.
Over thirty years ago he took up the position of chief costs clerk at the Earl of Dudley's Round Oak Works, Ltd.; later he became the secretary of the Company, then joint managing director, and in 1924 he was appointed managing director.
He joined the Iron and Steel Institute in 1909.