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Mary Ann O'Brien

b. 1960

Irish businesswoman and politician

Politician

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About Mary Ann O'Brien

Born 1960. Mary Ann O'Brien is an Irish politician.

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Important facts

Born

8 September 1960, County Waterford

Birth century

20th century

Occupation

Politician

Nationality

Ireland, Irish people

Positions held

Senator of Ireland

Family & relationships

Spouse

Jonathan Irwin

Contemporaries

People whose lives overlapped Mary Ann O'Brien's

Human rights defender

Roman Sikorski

1920 – 1983

Mathematician

Frequently asked questions

Who is Mary Ann O'Brien?

Irish businesswoman and politician

When was Mary Ann O'Brien born?

Mary Ann O'Brien was born on 8 September 1960 in County Waterford.

What is Mary Ann O'Brien's occupation?

Mary Ann O'Brien is a politician.

What nationality is Mary Ann O'Brien?

Mary Ann O'Brien is Irish.

Sources & further reading

· Wikipedia: Mary Ann O'Brien

· Wikidata: Q6778901

· DBpedia: Mary Ann O'Brien

Cite this page

APA: Biography.guide. (2026). Mary Ann O'Brien. https://biography.guide/mary-ann-o-brien/

MLA: "Mary Ann O'Brien." Biography.guide, https://biography.guide/mary-ann-o-brien/.

Chicago: "Mary Ann O'Brien." Biography.guide. https://biography.guide/mary-ann-o-brien/.

Data last updated: 2026-09-23 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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