Saint Euthymius the New of Thessalonica and Mt Athos was a native of the city of Ancyra in Galatia. His worldly name was Nicetas. On Mt Athos he was tonsured into the Great Schema and lived for three years in a cave in total silence, struggling with temptations. Saint Euthymius also lived for a long time as a stylite, not far from Thessaloniki. Before his death he lied on Hiera, an island of Mt Athos, where he reposed in 898. More at https://www.oca.org/saints/lives/2020/10/15/102972-venerable-euthymius-the-new-of-thessalonica-and-monk-of-mount-at