Henry Mainwaring in the King's cause in the English Civil War, was exiled to France, and died in poverty. He was buried at St. Giles' Church, Camberwell, London, on 15 May 1653. Mainwaring married a daughter of Sir Thomas Gardiner in 1630. She died in 1633. His brothers were Sir Arthur Mainwaring, Carver to Prince Henry, George Mainwaring, the defender of Tong Castle, and Sir Thomas Mainwaring, the Recorder of Reading. The Mainwaring family was old and distinguished, probably having arrived in England in the train of William the Conqueror (1066). Henry Mainwaring Sir Henry Mainwaring (1587–1653), was an English lawyer, soldier,
Sam Mainwaring March 1904, Mainwaring published two issues of a short-lived newspaper called "The General Strike," a publication which made detailed criticisms of the "officialism" of union bureaucracy and which publicised strikes in Europe making use of syndicalist tactics. In his later years, Mainwaring lived in London. On Sunday, 29 September 1907, while addressing a meeting on Parliament Hill Fields, Mainwaring was stricken by faintness and subsequently died. He was 55 years old at the time of his death. Mainwaring is credited with coining the phrase "anarcho-syndicalism" and it is for this he is best remembered. Mainwaring was cited as a major