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Lord Salisbury was the Prime Minister that Lord Randolph served under. Lord Randolph Churchill, the father of Winston Churchill, was a prominent British politician and served as the Chancellor of the Exchequer in Lord Salisbury's Conservative government from 1886 to 1892. Lord Salisbury, also known as Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, held the position of Prime Minister on three separate occasions during the late 19th century.