Catholic saint biography
St. Yves of Tréguier
- Commemoration:
- May 19
- Patron Saint of:
- lawyers
- Lived:
- 1253–1303 — Brittany, France
Why dates and liturgical observances can differ
Read the sources for this biography
Biography
Yves, also known as Ivo or Ives, studied civil and canon law before serving as an ecclesiastical judge in Brittany. His legal responsibilities were joined to priestly ministry and study of Scripture. He became especially known for assisting poor people who needed an advocate.
His studies took him to Paris and Orléans before he returned to Brittany. Serving first at Rennes and then at Tréguier, he brought legal training to disputes that affected real households. His reputation developed through the way he used professional skill on behalf of people with fewer resources.
He also resisted taxation he judged unjust, showing that charity could include a challenge to authority. Parish service kept legal work connected to the life of a community. His story connects professional competence with concern for people at a disadvantage.
His work sought to connect professional judgment with integrity and practical charity. After ordination he served parishes including Trédrez and Louannec, continuing the pastoral responsibilities that accompanied his legal work. He died in 1303 and was canonized in 1347. Commemorated on May 19, he is honored as a patron of lawyers and as a defender of the poor.
Context & contribution
Legal learning as a form of neighborly service
Yves's training joined civil law in Paris with canon law at Orléans. He then served as an ecclesiastical judge in Rennes and Tréguier while continuing to study Scripture. This background helps explain why his care for people in poverty was more than sympathy: he possessed skills needed to navigate institutions that could otherwise be intimidating.
His example makes room for a demanding understanding of charity. A fair hearing, an intelligible explanation, or competent assistance can matter as much as a gift of money. It also requires integrity from the professional who holds knowledge others lack. Yves's patronage of lawyers is thus an invitation to make expertise accessible and to resist using another person's vulnerability for advantage.
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
Practical guides to prayer, the saints, and living the Catholic faith.
Why Is Saint Luke's Symbol an Ox? Meaning and Biblical Roots
Discover why Saint Luke's symbol is a winged ox, its biblical roots, and how the image connects his Gospel with priesthood and sacrifice.
Go deeper into ScriptureRead the article Prayer & reflectionHow to Pray the Jesus Prayer: A Catholic Beginner's Guide
Learn the Jesus Prayer, its Eastern Christian roots and biblical meaning, with a simple Catholic practice focused on Christ and mercy.
Go deeper into ScriptureRead the articleFrom reading to reflection
What will you carry with you?
After reading about St. Yves of Tréguier, take a moment to consider:
- What knowledge do you have that someone else finds difficult to access? Offer a clear explanation or help finding a qualified, trustworthy adviser.
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 using the linked historical and ecclesiastical sources; devotional traditions distinguished from documented history.
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.