Lord Warden of the Cinque Ports was combined from 1267 with the office of Constable of Dover Castle. However, from 1708 Walmer Castle at Deal was to be preferred as the official residence of the Lord Warden of the Cinque Ports. The Lord Warden also holds the office of Admiral of the Cinque Ports with a maritime jurisdiction extending to the middle of the English Channel, from Redcliffe near Seaford, in Sussex to the shore underneath the Naze Tower, encompassing Brightlingsea in Essex, the only Cinque Port north of the Thames. In earlier centuries the northern limit was taken as the Shoe Beacon in Essex. The
Edward of Norwich, 2nd Duke of York he became a member of King Richard's council, and was with the king during a campaign in Ireland in 1394–5. Prior to that, although no patent has been found, he was created Earl of Cork. He used the styles of Rutland and Cork throughout the remainder of his life. In the late 1390s, Edward was sent on embassies to France and to the Count Palatine and was appointed to numerous offices, including Constable of Dover Castle, Lord Warden of the Cinque Ports, Keeper of the Channel Islands, Constable of the Tower, Warden of the New Forest, Keeper of Carisbrooke Castle