Editing 1434 (section)

=== July&ndash;September ===
* [[July 5]]&ndash; Slightly more than three months after claiming the Grand Principality of Moscow, Yury of Zvenigorod dies suddenly at the age of 59 and is succeeded by his son, [[Vasily Kosoy]].<ref name=SMS/> 
* [[July 10]]&ndash; In the [[Kingdom of León]] in Spain, [[Suero de Quiñones]] first stage the and his companions stage the ''Passo Honroso'', at the bridge across the [[Órbigo River]] near [[Santiago de Compostela]]. Any [[knight]] attempting to cross the bridge is challenged to a [[joust]] by the Quiñones knights. The challenge continues for the next 30 days.<ref name="RAH">{{cite web |title=Suero de Quiñones |url=https://dbe.rah.es/biografias/14404/suero-de-quinones |website=Diccionario Biográfico electrónico |publisher=Real Academia de la Historia |access-date=10 March 2023}}</ref>
* [[July 25]] &ndash; The coronation of [[Władysław III of Poland|Wladyslaw III]] as [[King of Poland]] takes place at the [[Wawel Cathedral]] in [[Kraków]].<ref>{{cite book |last1=Reddaway |first1=W. F. |last2=Penson |first2=J. H. |date=1950 |title=The Cambridge history of Poland from the origins to Sobieski - to 1696 |url=https://books.google.com/books?id=N883AAAAIAAJ |location=Cambridge |publisher=University Press |page=234 |isbn=978-1-001-28802-4 |oclc=877250752}}</ref>
* [[August 9]] &ndash; After fighting 166 jousts, and sustaining injuries over a month, Quiñones and his men end the ''Passo Honroso''.<ref name="RAH"/>
* [[August 16]] &ndash; King Eric of Pomerania is deposed from the Swedish throne at a meeting in Vadstena, though he still retains power in Denmark and Norway.
* [[August]] &ndash; Portuguese explorer [[Gil Eanes]] and his crew sail around the dangerous [[Cape Bojador]] of North Africa (off of [[Western Sahara]]) and survive, becoming the first Europeans to make the voyage and ending the legends about what lies on the other side of the "Dark Sea". The achievement is a breakthrough in trade between Europe and Asia.<ref>{{cite book | last=Butel | first=Paul | title=The Atlantic | publisher=Routledge | publication-place=London New York | date=2002-03-11 | isbn=978-1-134-84305-3 | url = https://www.google.com/books/edition/The_Atlantic/sLGIAgAAQBAJ?hl=en&gbpv=1&dq=Bojador+Eanes+June+1434&pg=PA42&printsec=frontcover}}</ref>
* [[September 29]] &ndash; Pope Eugene IV issues the [[papal bull]] ''Regimini gregis'', condemning the enslavement by the [[Kingdom of Castile]] of the [[Guanches]], the indigenous people of the [[Canary Islands]]. An order to free the slaves follows three months later.<ref>Manuel Lopes de Almeida, et al., ''Monumenta Henricina'' Volume 5, (Coimbra, 1963) pp. 89-93</ref>