All the results presented in the book were obtained recently, are new and are published for the first time. New information has been discovered about the Virgin Mary and Emperor Andronicus-Christ (Prince Andrei Bogolyubsky), the Slave War of the Novgorodians, Prince Dmitry Donskoy and Khan Mamai, Prince Alexander Nevsky and the Battle of the Ice on the pages of the ancient “History of Rome” by Titus Livy and the Old Testament. The authors extract unexpected consequences from the previously obtained mathematical and astronomical dating of past events. It turned out that “ancient” Tsarist Rome arose in the area between the Oka and Volga rivers (in Vladimir-Suzdal Rus') in the 13th - early 14th centuries. Another name for Imperial Rome is the Great u003d “Mongol” Empire of the 13th–16th centuries. It was discovered that famous “ancient” authors (Titus Livius, Plutarch, etc.) speak a lot and respectfully about the Virgin Mary, the mother of Emperor Andronicus-Christ from the 12th century n. e. For the first time, ancient secular sources are presented, telling about the Mother of God through the mouths of contemporaries. The assertion of the Scaligerian version that the Mother of God was described by contemporaries only in religious texts is refuted. As the authors note, the reconstruction they propose is still conjectural. At the same time, the authors are responsible for the accuracy and reliability of the dating they calculated.