List of heirs to the Russian throne

You have done OK job in this article but there has been mistakes... Example: Vasily I heir is Yury Dmitrievich and not his sons... This has been decided in will of Dmitri Donskoi  (link is on russian). Vasily I has not liked this but .....

Today I will look for other possible mistakes and if it is OK with you we will discuss on talk page ?