Editing 1421 (section)

=== April&ndash;June ===
* [[April 8]] &ndash; [[Maredudd ab Owain Glyndŵr]], son of the Welsh rebel [[Owain Glyndŵr]], accepts a pardon from, and swears loyalty to England's [[King Henry V]], formally bringing an end to the [[Glyndŵr rebellion]].<ref>{{cite book |last1=Davies |first1=R. R. |author1-link=Rees Davies |title=The Revolt of Owain Glyn Dŵr |date=1997 |publisher=Oxford University Press |location=Oxford, England |page=293 |isbn=978-0-19-285336-3}}</ref>
* [[April 12]] &ndash; [[Hedwig Jagiellon (1408–1431)|Hedwig Jagiellon]], the 13-year-old daughter of and heiress presumptive to [[Władysław II Jagiełło|Wladyslaw II]], King of Poland, is betrothed in a marriage contract to [[Frederick II, Elector of Brandenburg|Prince Frederick]], the 7-year-old son of [[Frederick I, Elector of Brandenburg]] as part of an alliance between Poland and Brandenburg during the [[Brandenburg–Pomeranian conflict]]. The marriage is scheduled to take place after November 19, 1427, when Prince Frederick is to be 14 years old, at which time he will live in Poland and become eligible to serve with Hedwig as ruler of Poland and Lithuania. The marriage will never take place, and the contract is annulled in 1424 when a male heir to the Polish throne, [[Władysław III of Poland|Wladyslaw]], is born.<ref>{{cite book |last=Duczmal |first=Małgorzata |title=Jogailaičiai | location=Vilnius |year=2012 |publisher=[[Mokslo ir enciklopedijų leidybos centras]] |page=245 |isbn=978-5-420-01703-6 | language= Lithuanian |others=translated by Birutė Mikalonienė and Vyturys Jarutis}}</ref> 
* [[April 24]] &ndash; The [[Sedlec Abbey]], a monastery for the [[Cistercians]] order in [[Bohemia]], is looted and burned by [[Hussites]] led by [[Jan Žižka]], and several of the monks inside are killed.<ref>Kateřina Chárvatová, ''Dějiny cisterckého řádu v Čechách 1142-1420'' ("History of the Cistercian Order in Bohemia 1142-1420")(Prague:Karolinum, 1998), ISBN 80-7184-617-1. p.103</ref> 
* [[May 26]] &ndash; [[Mehmed I]], [[Ottoman dynasty|Sultan]] of the [[Ottoman Empire]], dies and is succeeded by his son, [[Murad II]].
* [[June 10]] &ndash; One year after returning home for his marriage to [[Catherine of Valois]], and in the English defeat in the Battle of Baugé, [[King Henry V]] of England sails back to France with new troops to continue fighting in the Hundred Years War.
* [[June 25]] &ndash; [[Charles VII of France|Prince Charles of Valois]], the oldest son of [[Charles VI of France|King Charles VI]] and former Dauphin before being disinehrited by his father, captures the English fortress at [[Gallardon]] and has the entire garrison executed for treason, and then retakes [[Chartres]].<ref>{{cite book |last=Sumption |first=Jonathan |title=Cursed Kings:The Hundred Years War |volume=IV |publisher=Faber & Faber |year=2015|page=736}}</ref>