Another beginning of Khmelnytsky Uprising

Chronology of interregnum 1648:
May 16 – polish army is defeated in Battle of Zhovti Vody.
May 20 – polish king, Wladyslaw IV Waza, died.
Following the customary rule, Poland-Lithuania was ruled by an interrex, the senile Primate Maciej Lubienski. Due to Lubienski’s health problems, the powerful Crown Chancellor Jerzy Ossolinski became the de facto interrex.
May 25 - Crown Chancellor Jerzy Ossolinski and Deputy Chancellor of the Crown Andrzej Leszczyński visited Primate Maciej Lubienski. Primate declared, that the king died and set dates of regional Sejms (June 25) and the date of Convocation Sejm – July 14.
May 26 – polish army is crashed in Battle of Korsuń. Great Crown Hetman Mikołaj Potocki and Field Crown Hetman Marcin Kalinowski were taken prisoner of war.
May 31 – the news about Battle of Zhovti Vody reached Warsaw. New Sejms were organized to look for the ways of fighting against rebels.
June 5 - the news about Battle of Korsuń reached Warsaw. Panic in Warsaw.

June 6 – the only son of Jerzy Ossolinski died without heirs.
POD: Jerzy Ossolinski dies after this news. In OTL he died in August 1650 – only two years later.

The de facto interrex is Deputy Chancellor of the Crown Andrzej Leszczyński. In OTL he became Chancellor of the Crown after Jerzy died.

The main difference is positions, or “camps” of Ossolinski and Leszczyński. The two opposing factions that emerged during the election were:
- the pro-peace camp, headed by Jerzy Ossolinski and the Starosta of Kiev Adam Kisiel. It supported the election of Jan Kazimierz,
- the pro-war camp, headed by Jeremi Wisniowiecki and Aleksander Koniecpolski. This camp backed Jan Kazimierz’s brother, the Prince-Bishop of Breslau, Karol Ferdynand Vasa.
Leszczyński was in the pro-war camp.

June, 9 – congress of notables in Warsaw. Decisions:
- to create a new army (as in OTL);
- to ask Szlachta to force the election of new king (as in OTL);
- Jeremi Wiśniowiecki was designated as a commander of the army (in OTL - Zaslawski, Ostrorog and Koniecpolski who were weak commanders, because Ossolinski was afraid of Jeremi who could end the negotiations with Khmelnytsky. In TTL no negotiations were started, so the decision to Jeremi is rather logic.

June-July – in OTL congress of notables in Warsaw on 9 June instructs Adam Kisiel to enter into negotiations with Khmelnytsky. By 27 June, the Bratslav region, Volhynia and the southern Kyiv region were engulfed by the uprising, Khmelnytsky had halted at Bila Tserkva, Tughay Bey foraged with his horde, and the khan had returned to the Crimea with two hundred thousand captives. By August, Kysil's commission had failed and this period of truce was coming to an end. During this period of truce Szlachta and Magnates started fighting for their candidates, Election Sejm was set on September 27.

In TTL the war continues. In July Jeremi Wiśniowiecki probably won a battle against Cossacks (as he did in OTL, but in OTL it was a rather small victory), and in August-September may be one more battle, probably also successful for Poland.

So election Sejm could started early, in August.
In OTL, both candidates enjoyed widespread support among the electors, there was a danger that a double election would take place, similar to the one in 1587 (or in 1696). Bohdan Khmelnytsky sent a letter to Warsaw, expressing his support of Jan Kazimierz. Khmelnytsky’s letter was welcomed by the electors, who hoped for a truce with the Cossacks. In OTL, the election, which began on October 6, 1648, took place in the shadow of a disastrous Polish defeat in the Battle of Pilawce. So, the pro-peace camp was stronger.
Since Karol Ferdynand Vasa was well aware that his election would mean war, and that the situation in the Commonwealth was difficult, he decided to withdraw his nomination (November 11, 1648). On November 17, Jan Kazimierz was elected as the new King of Poland and Grand Duke of Lithuania.

But in TTL the situation is not so difficult, and after successful battles the pro-war camp should be stronger. It probably means, that Karol Ferdynand Vasa would elected.

And it means, that the second civil war can start (the first one is Khmelnytsky Uprising).
 
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