She may have married a Grand Prince of Novgorod, Kiev or Rostov - I am not sure. I do know more than one Chinese Princess married into the Riurikid bloodline of these Princes. I am having a HARD TIME finding an answer to this. Can anyone help? I do not speak nor can I read Chinese. I do know China has a wealth of very old documents - would the answer to that be somewhere in there perhaps? These marriages would have occurred hundreds of years ago - maybe as far back as 700-800 years of more.
Thank you for any help you can provide!
I've never heard of this and it's almost my field. You may be referring to a couple of Chingisid Mongol princesses from the Golden Horde (Qipchaq Khanate), who did marry into the Riurikid dynasty in 1257 (and had mainline descendants) (link to a genealogy wiki). This was right before the ascension of the Mongol Yuan Dynasty in China, which was nominally the overlord of the Golden Horde, but of course that did not make them Chinese.
First off, you should know in general that particularly long bloodlines can be suspect, because they're tied into the political legitimation of later dynasties, than any sort of accurate geneaology of ancestors.
Second, I'm curious where you're getting your information from, re: chinese princesses, as I'm under the impression the Chinese sent brides to marry with leaders of nearby steppe tribes within the chinese orbit, like historically those around modern day mongolia. Kiev/Russia is a long long way from Beijing.
Either way, let us know what information and sources you currently have at your finger tips, and maybe we can track down who these princesses are, be they Chinese, central asian, or something else.