Catholic saint biography

St. Gleb

Commemoration:
July 24
Lived:
Died 1015 — Kyivan Rus'

July 24 in the Ukrainian Greek Catholic calendar; the 2025 UGCC report documents this celebration. This is not a claim of a General Roman Calendar memorial.

Why dates and liturgical observances can differ

Gleb (Hlib), brother of Borys, is celebrated by the Ukrainian Greek Catholic Church. Shared Orthodox veneration does not exclude Catholic recognition.

Read the sources for this biography
Gleb: icon of two haloed men in richly patterned robes
anonymous · Source ↗ · Public domain · Resized for the web; no cropping or retouching.

Biography

Gleb, baptized David, was a son of Vladimir of Kyiv and a brother of Boris. Orthodox tradition honors the brothers as passion-bearers, emphasizing their response to violence rather than political or military victory.

Their father's death in 1015 was followed by a struggle for succession. According to the medieval Christian account, Sviatopolk sought to remove his brothers as rivals. Boris was killed first after refusing to use force against his own family.

Gleb was then summoned with a message claiming that his father was ill. Traveling by boat, he learned instead of his father's death and Boris's murder. Assassins seized the boat, and the narrative identifies a member of his own household as the person who killed him.

The detailed speeches and dramatic sequence come through hagiography and should not be read as a contemporary transcript. The title passion-bearer expresses the Church's interpretation of their deaths as an imitation of Christ's nonretaliation. Their joint veneration became a major part of the Christian memory of Kyivan Rus'. Keeping that theological meaning visible also distinguishes their remembrance from a simple celebration of successful royal power.

Context & contribution

Kinship turned into a means of betrayal

The Orthodox Church in America's account deliberately pairs two different deceptions. Boris is approached with a false promise of reconciliation and greater territory; Gleb is summoned with a report that his father is ill. In Gleb's story, an obligation that should have expressed family care becomes the means of drawing him into danger.

That narrative setting gives the title passion-bearer its particular force. The account measures the brothers' response within a struggle for inheritance and political power, rather than portraying their deaths as a conventional trial for refusing another religion. Reading the two summonses together reveals how the tradition contrasts trust in kinship with the violence of dynastic competition.

Explore the sources for this section

AI-assisted source comparison updated 2026-09-26. Editorial approach

From the Saint Discovery blog

Keep exploring your faith

Browse all articles

Practical guides to prayer, the saints, and living the Catholic faith.

From reading to reflection

What will you carry with you?

After reading about St. Gleb, take a moment to consider:

  1. Compare the messages sent to Boris and Gleb in the OCA account. Discuss how each exploits a different family responsibility and why that matters to the story's moral meaning.

These are reflection prompts from Saint Discovery, not quotations from the saint.

Sources and further reading

Biography source comparison recorded on . This is an AI-assisted comparison, not independent human or ecclesiastical approval.

What the recorded review covers

AI-assisted expansion checked against cited sources; historical traditions distinguished from documented evidence; not ecclesiastical approval

A source list helps you check an account; it does not establish that every claim is certain. Follow the biography’s qualifications about historical evidence, traditions and feast calendars.

Suggest a correction to this biography

How we research these pages and handle corrections · Directory corrections log

More lives to explore

Suggestions based on the site’s quiz themes, not a historical relationship or a measure of holiness.

Take the Saint QuizBrowse All Saints