John I of Brienne, Count of Eu
Count of Brienne
John I of Brienne 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.
He married Beatrice, the daughter of Guy III, Count of Saint-Pol. Wikipedia
Born: 1250
Died: June 12, 1294 (age 44 years), Clermont, France
Children: John II of Brienne, Count of Eu and Isabeau de Brienne
Great-grandparents: Alfonso IX of León, Berengaria of Castile, Alix, Countess of Eu, and more
Great grandchildren: Raoul II of Brienne, Count of Eu, Jean de Châtillon, Seigneur de Dampierre, Jeanne d'Eu, and more
Grandparents: John of Brienne, Berengaria of León, and Raoul II of Lusignan
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