alternatehistory.com

Your challenge is, in a scenario where Joseph Ferdinand of Bavaria (https://en.wikipedia.org/wiki/Joseph_Ferdinand_of_Bavaria_%281692-1699%29) doesn't die and becomes King of Spain on the death of Charles the Bewitched, his half-brother Charles (https://en.wikipedia.org/wiki/Charles_VII,_Holy_Roman_Emperor) also becomes King of Poland, if only briefly.

EDIT: What I see is Joseph marrying a Portuguese infanta - Teresa Maria of Portugal (who IOTL was betrothed to Charles of Austria before dying in 1704) or her sister Francisca Josefa (https://en.wikipedia.org/wiki/Infant...fa_of_Portugal), and Charles marrying his cousin, Maria Karolina Sobieska, thus being doubly descended from King John III of Poland.
Top