John Cavendish manor of Cavendish. In consequence, his four sons exchanged their father's name for that of the estate each inherited. John was the eldest of the sons. Sir John Cavendish married Alice de Odingsells, became a lawyer and was appointed as a Justice of the Common Pleas in 1371 and Chief Justice of the King's Bench in 1372. As Chief Justice he was obliged to suppress the Peasants' Revolt in 1381. Although Wat Tyler, the leader of the revolt was struck down by William Walworth, mayor of London, during negotiations on 15 June, John Cavendish, the second son of the Chief
William Cotton (Lord Mayor) Sheriff of London and Middlesex from 1868 to 1869, and Lord Mayor of London from 1875 to 1876, during which years he opened the new poultry and provisions market at Smithfield and presided over a grand banquet welcoming the Prince of Wales on his return from a tour of India. In 1868 he had stood for parliament unsuccessfully at Southwark. At the 1874 general election he was elected Member of Parliament for City of London. He lost his seat in parliament in the 1885 UK general election after representation was reduced from four to two under the Redistribution of Seats