A royal charter is a formal grant issued by a monarch to grant rights or powers to an individual or body corporate, or to establish organisations such as boroughs, universities and learned societies.
After William the Duke of Normandy took the crown of England in 1066, charters were promulgated by successive monarchs of England that specifically related to the Channel Islands, including the Bailiwick of Guernsey.
The geographical location of the Channel Islands became important when the islands became the front line in a series of wars with France that lasted for centuries. Their loyalty to the English Crown was duly rewarded.
The Charters are given in the form of Letters Patent (a form of open or public proclamation) and generally conclude with the words: In cujus rei testimonium has literas nostras fieri fecimus patentes. (in witness whereof we have caused these our letters to be made patent.)