John Boys (Royalist) Boys himself went to London rather than continue further military resistance while others of the Regiment went on to serve at Wallingford Castle. During August 1648, he made a futile attempt to raise the Siege of Walmer Castle in Deal, one of the Cinque Ports, and customary home of the Lord Warden. Sir Algernon Sydney replaced him as Warden in 1648. In 1659, Boys was held as a prisoner in Dover Castle for "petitioning for a free Parliament", but was released on 23 February 1660. He was then, reputedly, granted the office of Receiver of Customs at Dover from Charles
Cinque Ports parliament were sent to the warden following which representative barons of the Cinque Ports were selected to attend parliament. Thus the warden's duty in this respect was similar to that of the sheriff who received the writs for distribution to the barons in the shires. The existence of common (i.e. communal) seals of the barons of the individual ports (see illustration) suggests they formed a corporation as the seal was designed to be affixed to charters and legal documents which would bind them as a single body. This no doubt related to their privileges as monopolies. The warden and barons