About Henry O'Brien, 7th Earl of Thomond
Lived 1620 – 1691 (aged 70–71). Henry O'Brien, 7th Earl of Thomond was a politician.
Henry O'Brien, 7th Earl of Thomond PC (Ire) (c. 16202 May 1691) was an Irish peer and Chief of Clan O'Brien. He was styled Lord Ibrackan from 1639 to 1657.
O'Brien was the son of Barnabas O'Brien, 6th Earl of Thomond and Anne Fermor. In 1641, he married his first cousin Anne O'Brien (d. September 1645), daughter of Henry O'Brien, 5th Earl of Thomond, by whom he had one son: Henry, Lord Ibrackan (c. 1642 – 1678)
After Anne's death, he married Sarah Russell, daughter of Sir Francis Russell, and widow of Sir John Reynolds. This made O'Brian a brother-in-law of Henry Cromwell, who had married Sarah's sister Elizabeth. O'Brian and Sarah had five children: Henry, died in infancy Henry Horatio, Lord Ibrackan (d. 1690), who was father of Henry O'Brien, 8th Earl of Thomond (1688–1741) Elizabeth (d. 3 June 1688), without issue Auberie Anne Penelope, married Henry Howard, 6th Earl of Suffolk, and had issue Mary, married Sir Matthew Dudley, 2nd Baronet
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Important facts
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Frequently asked questions
Who was Henry O'Brien, 7th Earl of Thomond?
Irish earl
When was Henry O'Brien, 7th Earl of Thomond born?
Henry O'Brien, 7th Earl of Thomond was born in 1620.
When did Henry O'Brien, 7th Earl of Thomond die?
Henry O'Brien, 7th Earl of Thomond died in 1691.
What was Henry O'Brien, 7th Earl of Thomond's occupation?
Henry O'Brien, 7th Earl of Thomond was a politician.
What nationality was Henry O'Brien, 7th Earl of Thomond?
Henry O'Brien, 7th Earl of Thomond's recorded nationality: Kingdom of Ireland.
Sources & further reading
· Wikipedia: Henry O'Brien, 7th Earl of Thomond
· DBpedia: Henry O'Brien, 7th Earl of Thomond
Cite this page
APA: Biography.guide. (2026). Henry O'Brien, 7th Earl of Thomond. https://biography.guide/henry-o-brien-7th-earl-of-thomond/
MLA: "Henry O'Brien, 7th Earl of Thomond." Biography.guide, https://biography.guide/henry-o-brien-7th-earl-of-thomond/.
Chicago: "Henry O'Brien, 7th Earl of Thomond." Biography.guide. https://biography.guide/henry-o-brien-7th-earl-of-thomond/.
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