Murrough McDermot O'Brien, 3rd Baron Inchiquin
Irish Baron
About Murrough McDermot O'Brien, 3rd Baron Inchiquin
Lived 1550 – 1573 (aged 22–23).
Murrough McDermot O'Brien (c.1550 - 20 April 1573) was the 3rd Baron Inchiquin. He was the son of Dermod O'Brien, 2nd Baron Inchiquin and Margaret O'Brien and inherited his title in 1557 on the death of his father.
He married Margaret Cusack, daughter of Sir Thomas Cusack of Cussington, Meath, Lord Chancellor of Ireland and his second wife Maud Darcy.
He was murdered in 1573 by Dermot O'Shaughnessey, supposedly at the instigation of Ulick Burke, 3rd Earl of Clanricarde.
He was succeeded by his son, Murrough O'Brien, 4th Baron Inchiquin.
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Important facts
People in Murrough McDermot O'Brien, 3rd Baron Inchiquin's life
Named in this biography and alive at the same time
Contemporaries
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Frequently asked questions
Who was Murrough McDermot O'Brien, 3rd Baron Inchiquin?
Irish Baron
When was Murrough McDermot O'Brien, 3rd Baron Inchiquin born?
Murrough McDermot O'Brien, 3rd Baron Inchiquin was born in 1550.
When did Murrough McDermot O'Brien, 3rd Baron Inchiquin die?
Murrough McDermot O'Brien, 3rd Baron Inchiquin died in 1573.
What nationality was Murrough McDermot O'Brien, 3rd Baron Inchiquin?
Murrough McDermot O'Brien, 3rd Baron Inchiquin's recorded nationality: Kingdom of Ireland.
Sources & further reading
· Wikipedia: Murrough McDermot O'Brien, 3rd Baron Inchiquin
· DBpedia: Murrough McDermot O'Brien, 3rd Baron Inchiquin
Cite this page
APA: Biography.guide. (2026). Murrough McDermot O'Brien, 3rd Baron Inchiquin. https://biography.guide/murrough-mcdermot-o-brien-3rd-baron-inchiquin/
MLA: "Murrough McDermot O'Brien, 3rd Baron Inchiquin." Biography.guide, https://biography.guide/murrough-mcdermot-o-brien-3rd-baron-inchiquin/.
Chicago: "Murrough McDermot O'Brien, 3rd Baron Inchiquin." Biography.guide. https://biography.guide/murrough-mcdermot-o-brien-3rd-baron-inchiquin/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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