Editing 1431 (section)

=== April&ndash;June ===
* [[April 4]] &ndash; In Poland, [[Konrad V Kantner]], [[Duchy of Silesia|Duke of Oleśnica]], leads a raid against the [[Hussites]] at [[Gliwice]].
* [[April 5]] &ndash; In Germany, [[Jacob, Margrave of Baden-Baden|Jacob of the House of Zähringen]] becomes the new [[Margrave of Baden-Baden]] upon the death of his father, [[Bernard I, Margrave of Baden-Baden|Bernard I]].<ref>"[http://daten.digitale-sammlungen.de/0001/bsb00016327/images/index.html?seite=327|Jakob I., Markgraf von Baden"], ''Neue Deutsche Biographie (NDB)'', vol. 10 (Berlin: Duncker & Humblot, 1974) p.311 ].</ref>
* [[May 30]] &ndash; 19-year-old [[Joan of Arc]] is [[burned at the stake]] in [[Rouen]]. 
* [[June 6]] &ndash; The [[Battle on the Po (1431)|Battle on the Po]] takes place on the [[Po River]] in Italy near [[Cremona]] as the navy of the [[Duchy of Milan]] defeats a fleet of 85 [[galley]]s of the [[Republic of Venice]]. The Venetians lose over 2,500 men, as well as 28 of the galley warships and 42 transport ships.<ref>{{cite book|title=Dictionary of Battles and Sieges: A-E |first=Tony|last=Jaques |date=2001 |place=Westport}}</ref>
* [[June 16]] &ndash; The [[Teutonic Knights]] and [[Švitrigaila]] sign the [[Treaty of Christmemel]], creating an anti-Polish alliance.
* [[June 25]] &ndash; The Polish army invades the [[Principality of Volhynia]], now part of Ukraine, and captures much of the territory.