About the book: 2015 / Vasily III Ivanovich, the son of Ivan III the Great and Sophia Paleologus, is interesting to many. But especially – three points of his biography. Firstly, he annexed Ryazan to the Moscow Principality and returned the Seversk land, taking it away from Lithuania. Secondly, he was the father of one of the most controversial figures in Russian history - Ivan the Terrible. But most importantly, it was Vasily III who was named for the first time in the history of Rus' king And this happened in 1514 at the conclusion of an agreement with the Holy Roman Emperor Maximilian I.