It is not clear when the monastery was founded. As the cloister is not mentioned in documents before the 16th century, different dates - from 10th to 15th centuries - have been expounded. According to one tradition, the monastery was founded by a 10th century Greek monk, Sergius, and his Karelian companion, Herman. Heikki Kirkinen inclines to date the foundation of the monastery to the 12th century. Contemporary historians consider even this date too early. According to the scholarly consensus, the monastery was founded at some point towards the end of the 14th century. John H. Lind and Michael C. Paul date the founding to between 1389 and 1393 based on various sources, including the "Tale of the Valaamo Monastery," a sixteenth century manuscript, which has the monstery founded during the