Palamas

Gregory Palamas (1296 - 1359) was a monk of Mount Athos in Greece and later Archbishop of Thessalonica known as a preeminent theologian of Hesychasm. He is venerated as a Saint in the Eastern Orthodox Church as well as the Eastern Catholic Churches of Byzantine tradition, and some of his writings are collected in the Philokalia. The second Sunday of the Great Lent is called the Sunday of Gregory Palamas in those Churches that commemorate him.