Thomas Patrick Gilmartin, Irish clergyman of the Roman Catholic Church, is born in Castlebar, County Mayo, on May 18, 1861. He serves as Bishop of Clonfert from 1909 to 1918 and Archbishop of Tuam from 1918 to 1939.

Gilmartin is the son of Michael Gilmartin, Rinshiona, Castlebar.^[1] He is educated at the Franciscan monastery boys school in Errew and at O’Dea’s Academy in Castlebar. He attends St Jarlath’s College in Tuam, and then St Patrick’s College, Maynooth. Following his ordination to the priesthood in 1883, he becomes a professor of mathematics and natural science at St Jarlath’s.

In 1891, Gilmartin serves as Dean of Formation and Vice-President of St Patrick’s College, Maynooth. He is awarded a Doctor of Divinity by Rome in 1905.

He was appointed the Bishop of the Diocese of Clonfert by the Holy See on July 3, 1909 and is consecrated on 13 February 1910 by the Most Reverend John Healy, Archbishop of Tuam. On the death of Archbishop Healy, he was translated to the Metropolitan see of Tuam as archbishop on July 10, 1918.

During the Irish War of Independence, Archbishop Gilmartin speaks out strongly against violence. In January 1920, he criticizes the “undisguised ruffianism” in the rebel ranks. He counsels his priests that whatever their personal political beliefs, they should not take an aggressive part on behalf of either side. However, many younger clerics support Sinn Féin and the IRA.

Gilmartin is involved in the controversy over the appointment of Letitia Dunbar, a member of the Church of Ireland and graduate of Trinity College, Dublin, to the County Mayo librarianship in 1931.

T.H. White describes meeting the Archbishop on the top of Croagh Patrick on an annual Reek Sunday pilgrimage during the 1930s in his book The Godstone and the Blackymor and having a cup of tea with him on the top after overenthusiastically kissing his ring.

Gilmartin dies at the age of 78 in office in Tuam on October 14, 1939.

Gilmartin writes the memoir of Primate Joseph Dixon in Healy’s Centenary History of Maynooth in 1895. He is also a contributor to the Irish Ecclesiastical Record, the Irish Theological Quarterly, and the Catholic Encyclopedia.