The Jurchens and Kyrgyz sound like likely culprits.
I'd say the Jurchen.
Tibetan Kingdoms? I'm not sure what their standing was in this time period though.
My guess is Kara khitai.
Maybe the Alans or Bashkirs?
That is George's family's name in this? You said that you were going to change it correct?
B-but... no fair! I was the first one to guess only the Jurchen. His guess was much more general, and I was much more direct, and... waaah!
The Jurchens are way too far though. Not unless Temujin's family are forcibly integrated into the Jurchen Horde and are making their way into the Rus', Central Asia, Persia and even Byzantium.
Damn it! I was late to the contest!
So, if the Jurchens are more successful, could we see Tungusic languages becoming very successful and sidelining the Mongolic languages (though hopefully not to total extinction)?
Wait....JURCHEN HORDE!?!
Now, though, the long awaited crisis was at hand. In March 1229, the long line of beacons that dotted Anatolia began to blaze in alarm, Šurhaci Khan and his undefeated armies had begun the long march west with one objective: Constantinople.