The Cinque Ports were a privileged place, five coastal ports in Kent: Dover, Hastings, Hythe, Sandwich and New Romney, to which Rye and Winchlesea were added later. They were established to provide ships ready for the king to use were he yo need them. In exchange they were granted special liberties and exemptions from certain taxes.
Wikipedia Cinque Ports
Encyclopaedia Britannica 1911 Cinque Ports
Wikipedia Lord Warden of the Cinque Ports
Cinque Ports 1155 to 1500
VillageNet History - History affecting Kent & Sussex
History and Guide. Sandwich Kent UK: The Cinque Ports.http://www.open-sandwich.co.uk/town_history/cinqueports.htm
William Boys (May 2010). Collections for an History of Sandwich in Kent with Notices of the Other Cinque Ports and Members, and of Richborough by William Boys, Esq F a S. BiblioBazaar. ISBN 978-1-140-81716-1.
Katherine Maud Elisabeth Murray (1935). The Constitutional History of the Cinque Ports. Manchester University Press. GGKEY:SQ51B3WXU92.
John Horace Round (17 June 2010). Feudal England: Historical Studies on the XIth and XIIth Centuries. Cambridge University Press. pp. 557–. ISBN 978-1-108-01449-6.
History of Parliament Online. Cinque Ports
The Naval Service of the Cinque Ports
N. A. M. Rodger
The English Historical Review
Vol. 111, No. 442 (Jun., 1996), pp. 636-651
The Mariner's Mirror
Volume 15, Issue 2, 1929 pp. 142-191
The CINQUE PORTS
F. W. Brooks
The Cinque Ports under Henry II
English Historical Review (1909) XXIV (XCVI) pp. 732-3
Cinque Ports (Association) (1728). Charters of the Cinque Ports: Two Ancient Towns, and Their Members. Translated Into English, with Annotations, Historical and Critical Thereupon. Wherein Divers Old Words and Explain'd and Some of Their Ancient Customs and Privileges Observ'd. Bernard Lintot
John Philipot; Thomas Philipot (1776). "Cinque Ports". Villare Cantianum: Or, Kent Surveyed and Illustrated. Being an Exact Description of All the Parishes, Boroughs, Villages, and Other Respective Manors in the County of Kent; ... pp. 10–.