The Rev. Canon Cosslett Quinn (in Irish Cosslett Ó Cuinn), scholar, linguist, and priest of the Church of Ireland who translates the New Testament into Irish, is born in Derriaghy, County Antrim in what is now Northern Ireland on February 27, 1907.

Quinn is born to Charles Edward Quinn, rector of Derriaghy, and Edith Isobel Wadell. He studies at Campbell College in Belfast, and later at Trinity College Dublin, where he receives his Bachelor of Divinity in Theology in 1940.

Quinn is a poet, theologian, critic, biblical scholar, member of the ecumenical movement, and a scholar of the Irish language. During his studies, he develops a strong interest in Ulster Irish, and often visits the Irish-speaking Gola Island and Derrybeg. He also publishes articles in Éigse: A Journal of Irish Studies on the dialects of Irish spoken on Rathlin Island and Kilkenny. He compiles the folklore of native Irish speakers from the islands of Tory and Arranmore off the coast of County Donegal.

While working in Belfast and Inishowen in 1931, Quinn is promoted to the post of deacon. In 1961, he is appointed professor of Biblical Greek at Trinity College, and begins work on a new translation of the New Testament. He also translates the Book of Psalms and the Prayer Book of the Church of Ireland into Irish, as well as several Spanish works. Although it is unusual in his lifetime for Protestants to hold leading positions in the Irish language movement, Quinn is for a time President of Oireachtas na Gaeilge. He is made a canon of St. Patrick’s Cathedral in 1966, before retiring from the ministry in 1971.

Cosslett Quinn dies on December 6, 1995.