A young prince of Kyivan Rus’, murdered alongside his brother Boris in a dynastic power struggle and venerated as one of the first canonized saints of Rus’.

Saint Gleb was a young prince of Kyivan Rus’, son of Grand Prince Vladimir the Great, murdered on 5 September 1015 near Kyiv, Ukraine, at the order of his half-brother Svyatopolk during the succession struggle that followed their father’s death. He and his brother Boris, killed shortly before him, became venerated together as the first saints formally canonized by the Rus’ church.

Quick Facts

• Died: 5 September 1015 (Kyiv, Ukraine)
• Venerated as: Lay martyr
• Canonization: no formal process recorded; venerated through ancient local cult

Who Was Saint Gleb?

Saint Gleb was a young prince of Kyivan Rus’, son of Grand Prince Vladimir the Great, murdered on 5 September 1015 near Kyiv, Ukraine, at the order of his half-brother Svyatopolk during the succession struggle that followed their father’s death. He and his brother Boris, killed shortly before him, became venerated together as the first saints formally canonized by the Rus’ church.

Historical Setting

Vladimir the Great had brought Christianity to Kyivan Rus’ in 988, and his death in 1015 triggered a violent contest among his sons for control of the realm. Svyatopolk, seeking to eliminate rivals, had Boris and then Gleb killed rather than face them in the succession dispute, a betrayal made more striking because both young princes reportedly chose not to resist or raise arms against their brother.

Why the Church Remembers Saint Gleb

Boris and Gleb are venerated as passion-bearers, a distinctly Slavic category of sainthood honoring those who accepted an unjust death without violent resistance, in imitation of Christ’s own nonresistance to His executioners. Their cult became foundational to the young Rus’ church’s own sense of sanctity and became one of the first native canonizations of the Kyivan Christian tradition.

Canonization and Feast Day

Gleb’s veneration developed within the Eastern Christian tradition through the recognition of his and Boris’s cult by the Rus’ church in the eleventh century, an early instance of native canonization rather than a later Roman process; the Roman Martyrology also lists him among venerated saints of the Christian East.

What Catholics Can Learn Today

Saints Boris and Gleb’s choice not to resist, even at the cost of their lives, poses a hard question to any Christian tempted to answer betrayal with retaliation: whether nonviolent trust in God can be a form of victory rather than mere defeat.

A Prayer to Saint Gleb

Saint Gleb, young prince who accepted an unjust death rather than take up arms against your own brother, pray for peace among families and nations torn by rivalry and violence. Amen.

Sources

• Roman Martyrology
• Primary Chronicle (Rus’) historical sources
• Butler’s Lives of the Saints