Lord Lyons: A Record of British Diplomacy is a biography of Richard Lyons, 1st Viscount Lyons written by Thomas Legh, Baron Newton, who served as a member of Lord Lyons's staff at the Paris Embassy. Newton collected Lord's carefully preserved correspondence and draw upon his own diary and recollections to compile this biography of an eminent British diplomat, the favourite of Queen Victoria. Lyons was the most influential British diplomat during each of the four great crises of the second half of the 19th century: Italian unification; the American Civil War; the Eastern Question; and the replacement of France by Germany as the dominant Continental power subsequent to German Unification. Lyons is best known for solving the Trent Affair during the American Civil War; for laying the foundations for the Special Relationship and the Entente Cordiale; and for predicting, 32 years before World War I, the occurrence of an imperial war between France and Germany that would destroy Britain's international dominance.

Thomas Wodehouse Legh, 2nd Baron Newton (1857-1942) was a British diplomat and Conservative politician who served as Paymaster-General during the First World War. Lord Newton was also the author of two biographies, one on Richard Lyons, 1st Viscount Lyons, and the other on Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne.