Editing 1317 (section)

=== October &ndash; December ===
* [[October 7]] &ndash; Pope John XXII issues the bull ''Quorundam exigit'', imposing a more lenient treatment of supporters of the Franciscan cause of "unconditional poverty".<ref name=Galuszka/>
* [[October 17]] &ndash; Sir [[Gilbert Middleton]] releases the Bishop of Durham, [[Louis de Beaumont]], and the bishop's brother Henry after being paid a ransom of 500 marks (2,000 troy ounces) of silver.<ref name=Prestwich/>
* [[November 9]] &ndash; [[William II, Duke of Athens|William II]], son of King [[Frederick III of Sicily]], becomes the new [[Duke of Athens]] upon the death of his older brother, [[Manfred, Duke of Athens|Manfred of Sicily]].
* [[November 13]] &ndash; [[Yahballaha III]], Patriarch of the [[Church of the East]] in Byzantium, dies after serving 26 years as leader of the Eastern Orthodox Church. [[Timothy II of Seleucia-Ctesiphon]] will be elected to succeed him.
* [[November 25]] &ndash; [[Treaty of Templin]]: After ending the war between the [[Margraviate of Brandenburg]] and [[Denmark]], Brandenburg is forced to negotiate a truce. King [[Eric VI of Denmark|Eric VI]], his ally Duke [[Henry II, Lord of Mecklenburg|Henry the Lion]] and [[Waldemar, Margrave of Brandenburg-Stendal|Waldemar the Great]] sign a peace treaty in [[Templin]]. Brandenburg agrees to transfer [[Burg Stargard]] and [[Wesenberg, Mecklenburg-Vorpommern|Arnsberg]] castle to [[Mecklenburg]]. They also surrender the territories of [[Lands of Schlawe and Stolp|Schlawe-Stolp]], located on the [[Baltic Sea|Baltic coast]], to [[Duchy of Pomerania|Pomerania]].<ref>Wolf-Dieter Mohrmann (1972). ''Der Landfriede im Ostseeraum während des späten Mittelalters'', p. 95. Lassleben. {{ISBN|3-7847-4002-2}}.</ref><ref>Siegfried Schwanz (2002). ''Kleinzerlang 1752–2002'', p. 15. Edition Rieger. {{ISBN|3-935231-25-3}}.</ref>
* [[December 11]] &ndash; King [[Birger, King of Sweden|Birger Magnusson]] has his brothers, Dukes [[Eric Magnusson (duke)|Eric Magnusson]] and [[Valdemar, Duke of Finland|Valdemar Magnusson]], captured and thrown into a dungeon during the [[Nyköping Banquet]] – as a revenge for their imprisonment of him in the [[Håtuna games]] (see [[1306]]). As the brothers soon starve to death in the dungeon, their followers rebel against Birger, throwing [[Sweden]] into civil war.
* [[December 12]] &ndash; The [[Portuguese Navy|Portuguese Royal Navy]], with 20 warships, is created by order of [[Denis of Portugal|King Denis]]. The Navy has 20 armed [[galley]]s as warships, under the command of Admiral [[Manuel Pessanha]] and will celebrate its 700th anniversary in 2017 as the [[List of navies|oldest continuously serving navy in the world]].