Serving Christ Through Mary

Immaculata Comitium — Diocese of Down and Connor

The official website of the Legion of Mary residing in the Diocese of Down and Connor. For nearly a century, legionaries have brought the light of Christ and the love of Our Lady to the streets of Belfast and beyond.

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Coming in May

The World’s First English-Language
Legion of Mary Podcast

Episode I — May 2026
Legion of Mary
Legio Mariae Podcast

Millions of Catholics across the English-speaking world serve under the banner of Our Lady — and the first-ever English-language podcast for her Legion is now ready to launch.

The Immaculata Comitium is proud to announce that the Legio Mariae Podcast is fully funded and launching in May 2026 — bringing formation talks, legionary testimonies, reflections on the Handbook, and stories of apostolate directly to Catholics worldwide.

On the feast of Saint Louis de Montfort — the great apostle of true devotion to Mary — his intercession obtained the grace that made this possible. We thank God and all who prayed for this intention.

Discover the Podcast →
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Our Foundation

About the Legion of Mary

The largest apostolic organisation of lay people in the Catholic Church — born from a simple prayer meeting in Dublin, now spanning every continent on earth.

Founded on 7 September 1921 by the Servant of God Frank Duff, the Legion of Mary is an international association of the faithful who serve the Church on a voluntary basis. Under the powerful leadership of Mary Immaculate, legionaries bring the light of Christ to the sick, the lonely, the imprisoned, and the fallen away. Here in the Diocese of Down and Connor, our praesidia carry out this vital work each week.

The Legion Worldwide

A Global Army of Mary

10M+ Members
170+ Countries
3M+ Active Legionaries
100+ Years of Service
  • South Korea has one of the highest concentrations of legionaries — over 162,000 members among just 4 million Catholics
  • Strong presence across the Philippines, Brazil, Argentina and the Democratic Republic of Congo, each with 250,000–500,000 members
  • Across Ireland (North & South), the Legion counts over 540 praesidia, 6,100+ legionaries (4,924 senior and 1,244 junior) and 111 curiae serving every diocese on the island
  • Officially recognised by the Holy See as an international association of the faithful in 2014
Why Join

The Graces of Membership

  • ✝
    Live Your Baptismal Call The Legion draws you into the mission Christ entrusted to every baptised person — to sanctify, to witness, to serve.
  • ♡
    Grow Closer to Mary & Jesus Through weekly prayer, the Rosary, and Marian consecration, legionaries deepen a living relationship with Our Lady and her Son.
  • ⛺
    Receive Abundant Graces The Legion carries a treasury of spiritual benefits — including a share in the prayers and works of legionaries across the world.
  • ✭
    Find Purpose & Community Weekly praesidium meetings offer genuine friendship, spiritual direction, and a concrete apostolate that gives meaning to every week.
  • ☰
    Spiritual Formation for Life The Legion Handbook, Tessera prayers, and the example of saints like Frank Duff and Edel Quinn form legionaries into confident, faith-filled apostles.
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