Editing 1337 (section)

===January&ndash;December===
* [[March 16]] &ndash; [[Edward, the Black Prince]] establishes the [[Duchy of Cornwall]], becoming the first [[English people|English]] [[Duke]].<ref name="Pocket On This Day">{{cite book|title=Penguin Pocket On This Day|publisher=Penguin Reference Library|isbn=0-14-102715-0|year=2006}}</ref>
* [[May 24]] &ndash; [[Philip VI of France]] confiscates [[Gascony]] from English control.<ref name=CBH>{{cite book|last=Palmer|first=Alan|last2=Palmer |first2=Veronica|year=1992|title=The Chronology of British History|publisher=Century Ltd|location=London|pages=100–102|isbn=0-7126-5616-2}}</ref>
* [[August]] &ndash; [[Second War of Scottish Independence]]: English forces relieve [[Stirling Castle]], ending [[Edward III of England]]'s last campaign in Scotland.<ref name=CBH/>
* [[October]] &ndash; [[Hundred Years' War]]: [[Edward III of England]] formally rejects Philip VI's claim to the French throne, initiating hostilities between France and England.<ref name=CBH/><ref name="Cassell's Chronology">{{cite book|last=Williams|first=Hywel|title=Cassell's Chronology of World History|url=https://archive.org/details/cassellschronolo0000will|url-access=registration|location=London|publisher=Weidenfeld & Nicolson|year=2005|isbn=0-304-35730-8|pages=[https://archive.org/details/cassellschronolo0000will/page/159 159–161]}}</ref>
* [[November]] &ndash; [[Battle of Cadzand]]: English troops raid the [[County of Flanders|Flemish]] island of [[Cadzand]].