What if the Kingdom of Ruthenia (Galicia-Volhynia) does not fall but rather, manages to expand or at least survive until the collapse of the Golden Horde a few hundred years later? When they can safely expand into the former Kyivan Rus'.
Perhaps Shvarno manages to hold the Lithuanian throne, and the alliance between him and his brother Lev, aswell as with Hungary manages to defeat Poland (as OTL) capturing Lublin. Maybe this alliance is strong enough to expand its influence all the way to Kyiv and Chernihiv after a few decades?
Lev's two sons and any children of Shvarno (or if he died, Lev's children aswell) eventually manage to keep the realm together. Historically both brothers were allied with both Poland and Hungary. If they both along with their children don't die in battle against the Mongols, than Ruthenia will be stable enough where Poland and Hungary will not invade, as OTL they only invaded because the ruling dynasty was extinguished.
So by, 1400 the Kingdom of Ruthenia has control of Galicia, Volhynia, Moldavia, Kyiv, (possibly) Chernihiv, (possibly) Carpathian-Rus, (possibly) Lithuania, (possibly), Lublin, and 'Black Ruthenia'. I imagine holding Lithuania will be difficult, and in the end only make things harder. However, if they manage to hold it and convert it to Christianity I imagine it being either a separate Duchy or Kingdom to Ruthenia under a relative of the King of Ruthenia. Holding Lublin and the Carpathian-Rus might only make conflict with Poland and Hungary, so perhaps losing those like OTL will make things easier in the long run. As both Poland and Hungary might be needed to defeat the Mongols.
Since the Kingdom's apex and golden age only ended due to the dynastic instability brought on by the extinction of the Rurikid dynasty in the Principality, our POD being a surviving Rurikid dynasty in Ruthenia, the Kingdom should hold together. If this continues, by the year 1400 Ruthenia is the premier power in Eastern Europe, and has united the heartland of the Kyivan Rus'.
Is all of this possible? Am I missing any major factors? What else is likely to occur?
Perhaps Shvarno manages to hold the Lithuanian throne, and the alliance between him and his brother Lev, aswell as with Hungary manages to defeat Poland (as OTL) capturing Lublin. Maybe this alliance is strong enough to expand its influence all the way to Kyiv and Chernihiv after a few decades?
Lev's two sons and any children of Shvarno (or if he died, Lev's children aswell) eventually manage to keep the realm together. Historically both brothers were allied with both Poland and Hungary. If they both along with their children don't die in battle against the Mongols, than Ruthenia will be stable enough where Poland and Hungary will not invade, as OTL they only invaded because the ruling dynasty was extinguished.
So by, 1400 the Kingdom of Ruthenia has control of Galicia, Volhynia, Moldavia, Kyiv, (possibly) Chernihiv, (possibly) Carpathian-Rus, (possibly) Lithuania, (possibly), Lublin, and 'Black Ruthenia'. I imagine holding Lithuania will be difficult, and in the end only make things harder. However, if they manage to hold it and convert it to Christianity I imagine it being either a separate Duchy or Kingdom to Ruthenia under a relative of the King of Ruthenia. Holding Lublin and the Carpathian-Rus might only make conflict with Poland and Hungary, so perhaps losing those like OTL will make things easier in the long run. As both Poland and Hungary might be needed to defeat the Mongols.
Since the Kingdom's apex and golden age only ended due to the dynastic instability brought on by the extinction of the Rurikid dynasty in the Principality, our POD being a surviving Rurikid dynasty in Ruthenia, the Kingdom should hold together. If this continues, by the year 1400 Ruthenia is the premier power in Eastern Europe, and has united the heartland of the Kyivan Rus'.
Is all of this possible? Am I missing any major factors? What else is likely to occur?