Pachomius the Great

Venerable

Commemorated May 15

Our venerable father Pachomius the Great (c. 292-346 A.D.) was an early Egyptian ascetic, both a Desert Father and a founder of cenobitic monasticism in Egypt. He is celebrated by the Church on May 15 and is one of the few (non Biblical) saints to be venerated by Oriental Orthodoxy, Eastern Orthodoxy, Catholicism and some Protestant Churches.

Source: OrthodoxWiki