About Alphonso of Brienne
Lived 1227 – 1270 (aged 42–43). Alphonso of Brienne was a French aristocrat.
Alfonso of Brienne, called Alphonse d'Acre (c. 1220 – 14 September 1270), was the son of John of Brienne and Berengaria of León, born in Acre.
Alfonso took part in the Seventh Crusade (1248) as a squire. By his marriage (before 1250) to Marie, Countess of Eu he became Count of Eu. He was also Grand Chamberlain of France. He died on 14 September 1270 in Tunis on the Eighth Crusade in the same epidemic that claimed King Louis IX.
He had at least two children by Marie: John I of Brienne, Count of Eu Blanche (d. 1338), Abbess of Maubuisson
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Important facts
People in Alphonso of Brienne's life
Named in this biography and alive at the same time
Related people
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Contemporaries
People whose lives overlapped Alphonso of Brienne's
Frequently asked questions
Who was Alphonso of Brienne?
Count of Eu
When was Alphonso of Brienne born?
Alphonso of Brienne was born in 1227 in Acre.
When did Alphonso of Brienne die?
Alphonso of Brienne died on 25 August 1270 in Tunis.
What was Alphonso of Brienne's occupation?
Alphonso of Brienne was an aristocrat.
What nationality was Alphonso of Brienne?
Alphonso of Brienne was French.
Sources & further reading
· Wikipedia: Alphonso of Brienne
Cite this page
APA: Biography.guide. (2026). Alphonso of Brienne. https://biography.guide/alphonso-of-brienne/
MLA: "Alphonso of Brienne." Biography.guide, https://biography.guide/alphonso-of-brienne/.
Chicago: "Alphonso of Brienne." Biography.guide. https://biography.guide/alphonso-of-brienne/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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