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 the development of the Royal Navy. King Edward I of England granted the citizens of the Cinque Ports special privileges, including the right to bring goods into the country without paying import duties; in return the Ports would supply him with men and ships in time of war (as in the Welsh campaign of 1282). The associated ports, known as "limbs", were given the same privileges. The five head ports and two ancient towns were entitled to send two Members to Parliament. A Lord Warden of the Cinque Ports was appointed, and also held the title of Constable of Dover