WI: Crown of Bohemia given to Poland-Lithuania

Reading about the thirty years war, I have found an idea that has not been exploited. What if the Crown of Bohemia was given to Poland Lithuania?

To make it work, a POD of the pact that Sigismund Vasa made with Emperor Matthias could work. In Silesia, their were many Polish descended people, making the idea of giving the Crown to them appealing. In addition, the Commonwealth guaranteed Religious freedom, which would allow the Bohemians to practice in peace.

Another question is, other then the Hapsburg and Commonwealth allince never materializing, what other methods could work that could grant the PLC the Bohemian Crown?
 
1) Boleslaw Chobry was Duke of Bohemia in 1003, so if he makes it stick, then Bohemia will continue to be part of the Piast lands. It may become side-tracked by genealogy (see Silesian Piasts) and a PoD this early will butterfly the PLC, but hey.

2) If Waclav III of Bohemia is more of a 'Great King', he could unite Poland, Bohemia, Hungary and Croatia under his rule. Again, this leaves out Lithuania.

3) Louis II of Bohemia, Hungary and Croatia wins the Battle of Mohacs and generally wins all the wars that were going on at that time, while Zygmunt I dies without sons/children. Louis then controls everywhere from Smolensk to Dubrovnik and is therefore 'the Man'.

4) Emperor Maximilian II, having won the royal election in 1575, joins Poland-Lithuania to the Habsburg dominions, which include Bohemia. The ensuing superstate would be positively ridiculous in scale, but not really in the spirit of OP.

5) The Elector of Saxony becomes King of Bohemia in an Alt-Thirty Years War and then a descendant becomes king of Poland as OTL, except this time the Wettins actually manage to keep the throne for more than ten years at a time.
 
The Hussites offered Bohemian crown to Władysław Jagiełło (Jogaila) in 1422. They were impressed by Polish delegation at the Council of Constance, where Polish delegates defended Jan Hus (or rather protested against his incarceration and execution - it does not mean they agreed with his views) and opposed the idea of forceful convertion. After some consideration Polish king refused, probably because of catholic opposition in Poland and fears of foreign intervention. Jogaila himself was a new convert (born as pagan, he was baptized as a grown man so he could become king of Poland), and he defeated the Teutonic Knights, who for many influential people in western Europe were soldiers of Christ. His position as a Christian monarch was not very strong.

Of course Polish-Lithuanian-Bohemian union doesn't need to lead to the new Commonwealth.
 
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