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
Lord Warden of the Cinque Ports of the Cinque Ports", they reflected an early concept that military service at sea constituted land tenure "per baroniam" making them "quasi" feudal barons. The early 14th-century treatise "Modus Tenendi Parliamentum" stated the Barons of the Cinque Ports to hold a place of precedence below the lay magnates but above the representatives of the shires and boroughs. Writs of summons to 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