Francis Michael Duff, Irish lay Catholic and author known for bringing attention to the role of the Catholic Laity during the Second Vatican Council of the Roman Catholic Church, dies in Dublin on November 7, 1980. He is also the founder of the Legion of Mary in Dublin.

Duff is born in Dublin on June 7, 1889, at 97 Phibsboro Road, the eldest of seven children of John Duff and his wife, Susan Letitia (née Freehill). The wealthy family lives in the city at St. Patrick’s Road, Drumcondra. He attends Blackrock College.

In 1908, Duff enters the Civil Service and is assigned to the Irish Land Commission. In 1913, he joins the Society of Saint Vincent de Paul and is exposed to the real poverty of Dublin. Many who live in tenement squalor are forced to attend soup kitchens for sustenance, and abject poverty, alcoholism, and prostitution are rife in parts of Dublin. He joins and soon rises through the ranks to President of the St. Patrick’s Conference at St. Nicholas of Myra Parish. Having concern for people he sees as materially and spiritually deprived, he gets the idea to picket Protestant soup kitchens as he considers they are giving aid in the form of food and free accommodation at hostels in return for not attending Catholic services. He sets up rival Catholic soup kitchens and, with his friend, Sergeant Major Joe Gabbett, discourages Catholics from patronizing Protestant soup kitchens. They succeeded in closing down two of them over the years.

Duff publishes his first pamphlet, Can we be Saints?, in 1916. In it, he expresses the conviction that all, without exception, are called to be saints, and that through Christian faith, all have the means necessary.

In 1918, a friend gifts Duff a copy of True Devotion to Mary by the seventeenth-century French cleric Louis de Montfort, which influences his views on Mary. He is additionally influenced by the writings of John Henry Newman.

Duff briefly acts as private secretary to Michael Collins, the chairman of the Provisional Government and the commander-in-chief of the National Army. In 1924, he is transferred to the Department of Finance.

On September 7, 1921, Duff is a part of a meeting alongside Fr. Michael Toher and fifteen women which becomes the nucleus of what would become the Legion of Mary. The Legion of Mary is created to organise lay Catholics to perform voluntary work. He models the organisation on Roman legions. Some of the first causes the Legion pursues is to become involved with homelessness and prostitution in Dublin. In 1922, he defies the wishes of the Archbishop of Dublin and the widespread Crypto-Calvinism, or Jansenism, within the Catholic Church in Ireland, which had created an intense hostility towards both prostitutes and other allegedly “fallen women.” Similarly, to St. Vitalis of Gaza before him, he begins an outreach to the prostitutes living in often brutal and inhuman conditions in the “kip houses” of “the Monto,” as Dublin’s red-light district, one of the largest in Europe at the time, is then called. Although middle-class Dubliners dismissively view these women as “whores,” the impoverished but devoutly Catholic residents of the Monto tenements refer to local prostitutes as “unfortunate girls,” and understand that they often turn to prostitution as a last resort. As part of his work, Duff establishes the Sancta Maria hostel, a safe house for former prostitutes who had run away from their “kip keepers.” Following the Irish War of Independence and Irish Civil War, he also persuades the first Catholic Commissioner of the Dublin Metropolitan Police, former Irish Army General W. R. E. Murphy, to launch a crackdown and, even though prostitution in the Republic of Ireland, rooted in human trafficking, still exists, the closure of the Monto’s last “Kip-Houses” is announced on March 12, 1925.

In 1927, Duff establishes the Morning Star hostel for homeless men, followed shortly by the Regina Coeli hostel for homeless women in 1930. Unlike the Magdalen Asylums, the Regina Coeli hostel reflects his view that unwed mothers should be taught how to be able to provide for and raise their children. This defies the norm of the era which holds that the children of unwed mothers should be saved from the stigma of their illegitimacy by being put up for adoption as quickly as possible.

While Duff enjoys the support of W. T. Cosgrave, Ireland’s head of government, and in May 1931 is granted an audience with Pope Pius XI, his efforts are opposed internally in the Dublin diocese. The Archbishop of Dublin Edward Joseph Byrne and his successor John Charles McQuaid seek to censor him because of his involvement with prostitutes. McQuaid also does not approve of his ecumenical efforts. In the 1930s and 1940s Duff creates the Mercier Society, a study group designed to bring together Catholics and Protestants, as well as the Pillar of Fire, a group designed to promote dialogue with Ireland’s Jewish community. In communication with Irish social dissidents Seán Ó Faoláin and Peadar O’Donnell, he suggests he is far more censored than even they are.

Duff does have some supporters amongst the Catholic hierarchy though. With the backing of Cardinal Joseph MacRory and Francis Bourne of Westminster, the Legion is able to expand rapidly and internationally. In 1928 the Legion establishes its first presidium in Scotland. In 1932 he is able to use the occasion of the Eucharistic Congress of Dublin to introduce the concept of the Legion of Mary to several visiting bishops, leading to further international growth.

Duff retires from the Civil Service in 1934 to devote all of his time to the Legion of Mary.

In July 1940, an overseas club for Afro-Asian students in Dublin is created. At that time Ireland is a popular destination for students from Asia and Africa because of its recent anti-imperial, anti-colonial history. Duff personally funds the purchase of a building for the club using funds from an inheritance. The club lasts until 1976 and facilitate many notable students, including Jaja Wachuku.

For the rest of his life, and with the help of many others, Duff guides the Legion’s worldwide extension. Today, the Legion of Mary has an estimated four million active members and 10 million auxiliary members in close to 200 countries in almost every diocese in the Catholic Church.

In 1965, Pope Paul VI invites Duff to attend the Second Vatican Council as a lay observer. When he is introduced to the assembly by the Archbishop of Liverpool, John Heenan, he receives a standing ovation.

Duff makes the promotion of devotion to the Most Sacred Heart of Jesus part of the Legion’s apostolate.

Duff dies in Dublin at the age of 91 on November 7, 1980, and is interred at Glasnevin Cemetery. In July 1996, the cause of his beatification is introduced by Cardinal Desmond Connell.