Blessed Simeon was the seventh Bishop of Polotsk and the first bishop of the Tver diocese, coming from the family of the Polotsk princes. In 1263, after the murder of the Polotsk prince, he moved to Tver, where he became a bishop under the blessed prince Yaroslav Yaroslavich. Simeon was known for his holy and ascetic life, managing his flock with wisdom and virtue, defending the poor and the oppressed, and was not afraid to speak the truth to the princes.
In 1271, he bid farewell to Prince Yaroslav, who passed away on the way from the Horde, and performed a funeral hymn over him. In 1276, a fire destroyed the residential buildings of Tver, and Simeon took on the labor of restoring the churches. In 1285, he founded a stone cathedral in honor of the Savior, and in 1287, he consecrated the movable altar in the newly built cathedral.
Saint Simeon passed away on February 3, 1289, and his body was laid in the church of St. Savior on the right side.
