Alfonso of Brienne, called Alphonse d'Acre (c. 1220 – 14 September 1270), was the son of

John of Brienne John of Brienne ( 1170 – 19–23 March 1237), also known as John I, was the king of Jerusalem from 1210 to 1225 and Latin emperor of Constantinople from 1229 to 1237. He was the youngest son of Erard II of Brienne, a wealthy nobleman in Cham ...

and Berengaria of León, born in Acre. Alfonso took part in the

Seventh Crusade The Seventh Crusade (1248–1254) was the first of the two Crusades led by Louis IX of France. Also known as the Crusade of Louis IX to the Holy Land, it aimed to reclaim the Holy Land by attacking Egypt, the main seat of Muslim power in the Nea ...

(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 John I of Brienne (born 1246 died 12 June 1294) was the son of Alphonso of Brienne and Marie de Lusigan. His mother was the heiress of Eu, Seine-Maritime, and he succeeded his father as Count of Eu in 1260. (both The Chronique des comtes d’E ...

*Blanche (d. 1338), Abbess of Maubuisson

Ancestry

References

Sources

* * {{DEFAULTSORT:Alphonso Of Brienne 1220s births 1270 deaths People from Acre, Israel Counts of Eu Christians of the Seventh Crusade Christians of the Eighth Crusade House of Brienne Burials at the Basilica of Saint-Denis Sons of emperors Jure uxoris counts