What is John II Casimir Vasa?
{{Infobox royalty | succession = [[King of Poland]]<br/>[[Grand Duke of Lithuania]] | predecessor = [[Władysław IV Vasa]] | successor = [[Michael Korybut Wiśniowiecki|Michael I]] | image = Schultz John II Casimir Vasa.jpg | caption = Portrait by [[Daniel Schultz]], {{circa|1658}} | signature = Signature of John II Casimir of Poland.PNG | birth_date = {{birth date|df=yes|1609|3|22}} | birth_place = [[Kraków]], [[Polish–Lithuanian Commonwealth]] | death_date = {{death date and age|df=yes|1672|12|16|1609|3|22}} | death_place = [[Nevers]], [[Kingdom of France]] | date of burial = 31 January 1676 | place of burial= [[Wawel Cathedral]], Kraków (body); [[Abbey of Saint-Germain-des-Prés]], [[Paris]] (heart) | reign = November 1648&nbsp;– 16 September 1668 | coronation = 19 January 1649 | house = [[House of Vasa|Vasa]] | father = [[Sigismund III Vasa]] | religion = [[Catholic]] | mother = [[Constance of Austria]] | spouses = [[Marie Louise Gonzaga]]<br/>[[Claudine Françoise Mignot]] | issue = [[John Sigismund Vasa]]<br/>[[Maria Anna Vasa]] }} '''John II Casimir Vasa''' ({{lang-pl|Jan II Kazimierz Waza}}; {{lang-lt|Jonas Kazimieras Vaza}}; 22 March 1609&nbsp;– 16 December 1672) was [[King of Poland]] and [[Grand Duke of Lithuania]] from 1648 to his [[abdication]] in 1668 as well as a claimant to the throne of [[Sweden]] from 1648 to 1660. He was the first son of [[Sigismund III Vasa]] with his second wife [[Constance of Austria]]. John Casimir succeeded his older half-brother, [[Władysław IV Vasa]].<ref>{{Cite news|url=http://sciaga.pl/tekst/5949-6-jan_kazimierz|title=Jan Kazimierz|work=Sciaga.pl|access-date=2018-10-01|language=pl}}</ref><ref>{{cite web|publisher=[[UNESCO]]|url=http://www.mb.vu.lt/unesco/rankrasciai/autografai/karalisk/jankaz/emjankaz.htm|title=Historical Collections of the Vilnius University Library&nbsp;– MANUSCRIPTS|access-date=20 June 2009|url-status=dead|archive-url=https://web.archive.org/web/2