Euthymius I

Euthymius I (born c. 834, Seleucia, Cilicia, Asia Minor—died Aug. 5, 917, Constantinople) was an Orthodox patriarch of Constantinople, monk, and theologian. He was a principal figure in the Tetragamy (Fourth Marriage) controversy of the Byzantine emperor Leo VI the Wise. A monk of a monastery on Mt. Olympus, Asia Minor, Euthymius became abbot of St. Theodora in Constantinople and confessor to Leo VI. He used his influence over the Emperor to protect the followers...