About John Hearne
Lived 1893 – 1969 (aged 75). John Hearne was an Irish diplomat and jurist.
John Joseph Hearne (; 1 June 189329 March 1969 ) was an Irish barrister, academic and diplomat who was referred to as "Ireland's Thomas Jefferson" for his role in the drafting of the 1937 Constitution of Ireland. He was also the first Ambassador of Ireland to the United States. He also studied law at University College Dublin, where he was awarded an LLB Degree.
Career Legal career In 1937, during the government of Éamon de Valera, he was working as a legal expert in the Department of External Affairs when de Valera called on him to assist in the writing of the new Irish constitution, which would replace the 1922 Constitution of the Irish Free State. With Maurice Moynihan, Hearne drew up the first draft of the constitution; according to Moynihan, Hearne had been instrumental in convincing de Valera that a new constitution was necessary in the first place. The exact role of Hearne is not evident from the remaining documents; it is not clear who actually wrote the first draft, and according to the Irish historian J. J. Lee, "Much remains to be uncovered about the planning and drafting of the constitution, including not least the roles of John Hearne, the legal adviser to External Affairs, and of Maurice Moynihan."
Diplomatic career After his legal career, Hearne filled a number of diplomatic positions. In 1939, he was appointed High Commissioner to Canada. In March 1950, he became the first Irish ambassador to the United States, It was Hearne who began the tradition of presenting a bowl of shamrock to the sitting U.S. President at the White House on St Patrick's Day. In 1954, he gave the commencement address at Boston College, and on that occasion was awarded with an honorary degree. In 1960, after retiring from the diplomatic service, he became a legislative consultant to Nigeria and Ghana, which had recently acquired independence, albeit within the Commonwealth.
A bust of Hearne by Elizabeth O'Kane was unveiled in his native Waterford on 3 July 2017 on the 80th anniversary of the constitution. There is a replica in the Irish Embassy, Washington, D.C., and a replica stands in the garden of Iveagh House, headquarters of the Irish Department of Foreign Affairs.
A biography of Hearne, "John Hearne: Architect of the 1937 Constitution of Ireland" by Eugene Broderick was published in 2017.
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Important facts
People in John Hearne's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped John Hearne's
Frequently asked questions
Who was John Hearne?
Irish legal scholar and diplomat
When was John Hearne born?
John Hearne was born on 4 November 1893 in Waterford.
When did John Hearne die?
John Hearne died on 29 March 1969 in Dublin.
What was John Hearne's occupation?
John Hearne was a diplomat and jurist.
What nationality was John Hearne?
John Hearne was Irish.
Sources & further reading
· DBpedia: John Hearne (lawyer)
Cite this page
APA: Biography.guide. (2026). John Hearne. https://biography.guide/john-hearne/
MLA: "John Hearne." Biography.guide, https://biography.guide/john-hearne/.
Chicago: "John Hearne." Biography.guide. https://biography.guide/john-hearne/.
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