Sir John Harrison supported the Royalist side of the English Civil War and these Royalists were also known by what other name?
John Harrison (died 1669):  He supported the Royalist side in the English Civil War. English Civil War: The English Civil War (1642–1651) was a series of armed conflicts and political machinations between Parliamentarians ("Roundheads") and Royalists ("Cavaliers") over, principally, the manner of England's government.
Royalists ("Cavaliers")