There are not reliable sources about the creation of monastery.
There are only church traditions. There is a fact that the relics of the monks Sergiy and Herman were brought from Novgorod while military activities were there in XII century.
The Confirmation that the monastery arose very early is not only a fact of transferring relics but the words about monastery are mentioned in different legends. There is mention of the fact that the Monk Avramiy from Rostov was baptized on Valaam before the official baptism of old Russia in the most early editions.
In the 15th century the monastery was called the great honest monastery. For centuries, Valaam Brotherhood did not expose the sword and did not spill the enemy’s blood.