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,
William Mainwaring Council. However Mainwaring opposed an amendment to exclude men from Wales and Monmouthshire from the liability to do National Service, declaring that "no decent man or woman in Wales would support the amendment". At the 1950 general election, Harry Pollitt made his third challenge to win the Rhondda East constituency. However, the outbreak of the Cold War against Soviet Union was thought to have alienated many in the coalfield. At the poll, Mainwaring obtained a majority of 22,182 and Pollitt barely retained his deposit. Mainwaring was a strong supporter of the Government policy of fighting the Korean War, which he