High Quality Content by WIKIPEDIA articles! The Hypatian Monastery is a male monastery, situated on the bank of the Kostroma River just opposite the city of Kostroma. It was founded around 1330 by a Tatar convert, Prince Chet, whose male-line descendants include Solomonia Saburova and Boris Godunov.In 1435, Vasily II concluded a peace with his cousin Vasily Kosoy there. At that time, the cloister was a notable centre of learning. It was here that Nikolay Karamzin discovered a set of three 14th-century chronicles, including the Primary Chronicle, now known as the Hypatian Codex.During the Time of Troubles in Russia, the Hypatian Monastery was occupied by the supporters of False Dmitriy II in the spring of 1609. In September of that same year, the monastery was captured by the Muscovite army after a long siege. On March 14, 1613, Zemsky Sobor announced that Mikhail Romanov, who had been in this monastery at that time, would be the Russian tsar.