"dated from the Civil War"

The English Civil War (1642–1651), was a conflict between supporters of Parliament (Parliamentarians, or Roundheads) and supporters of King Charles I (Royalists, or Cavaliers). The Civil War ended with the execution of Charles I, and the English monarchy being replaced by the Commonwealth of England, and then by a Protectorate under the control of Oliver Cromwell.

Fore more information on the Civil War, see the British Civil Wars website.