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Sir Henry Bradwardine Jackson (1855–1929) by Walter Stoneman, 1918 © National Portrait Gallery, London


Jackson, Sir Henry Bradwardine (1855–1929), naval officer and developer of wireless telegraphy, was born on 21 January 1855 at Barnsley, Yorkshire, the eldest son of Henry Jackson, a farmer in nearby Cudworth, and his wife, Jane, the daughter of Charles Tee of Barnsley...