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John Patrick Treacy

1890 – 1964

Catholic bishop

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About John Patrick Treacy

Lived 1890 – 1964 (aged 74). John Patrick Treacy was a catholic priest and catholic bishop.

John Patrick Treacy (July 23, 1891 – October 11, 1964) was an American lawyer and prelate of the Roman Catholic Church who was bishop of the Diocese of La Crosse in Wisconsin from 1948 until his death in 1964.

Biography

Early life and education Treacy was born on July 23, 1891, in Marlborough, Massachusetts, the only child of John and Ann (née O'Kane) Treacy. He attended the College of the Holy Cross in Worcester, Massachusetts, and studied at Harvard Law School before enrolling at the Catholic University of America in Washington, D.C. Following his graduation from the Catholic University in 1912, Treacy returned to Massachusetts and studied at St. John's Seminary in Boston.

After 12 years in parish work, Treacy became diocesan director of the Society for the Propagation of the Faith in 1931. He attended the first two sessions of the Second Vatican Council in Rome between 1962 and 1963.

Treacy died on October 11, 1964, at St. Francis Hospital in La Crosse.

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Important facts

Birth century
Education
Harvard Law School, The Catholic University of America, Saint John's Seminary, College of the Holy Cross
Positions held
Roman Catholic Bishop of La Crosse, Titular bishop

People in John Patrick Treacy's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped John Patrick Treacy's

Frequently asked questions

Who was John Patrick Treacy?

Catholic bishop

When was John Patrick Treacy born?

John Patrick Treacy was born on 23 July 1890 in Marlborough.

When did John Patrick Treacy die?

John Patrick Treacy died on 11 October 1964.

What was John Patrick Treacy's occupation?

John Patrick Treacy was a catholic priest and catholic bishop.

Sources & further reading

· Wikipedia: John Patrick Treacy

· Wikidata: Q16003766

· DBpedia: John Patrick Treacy

Cite this page

APA: Biography.guide. (2026). John Patrick Treacy. https://biography.guide/john-patrick-treacy/

MLA: "John Patrick Treacy." Biography.guide, https://biography.guide/john-patrick-treacy/.

Chicago: "John Patrick Treacy." Biography.guide. https://biography.guide/john-patrick-treacy/.

Data last updated: 2026-09-22 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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