Foundation of Grigoriou Monastery
Gregory is credited with building and dedicating a monastery to Saint Nicholas on the southwestern coast of the Athonite peninsula, between the monasteries of Simonopetra and Dionysiou. The community was afterward renamed Grigoriou after its founder, and it holds the seventeenth place in the hierarchical order of the twenty Athonite monasteries. By tradition Gregory chose the site for its nearness to the cell associated with Saint Gregory of Sinai.
Sources differ on when the monastery was founded. Some place its origin in the early fourteenth century, while documentary references to the community appear in the records of the 1340s. This range, together with the variant traditions about the founder's life, has left the foundation date uncertain, and accounts of the monastery generally present it with this caution rather than fixing a single year.