Jocelyn I de Courtenay (c. 1034-after 1069), son of Athon, Châtelain de Châteaurenard, Seigneur de Courtenay.
He first married Hildegarde de Château-Landon, daughter of Geoffrey II, Count of Gâtinais, and Ermengarde of Anjou (daughter of Fulk III, Count of Anjou).
Joscelin and Hildegarde had one daughter: Joscelin married secondly Elizabeth of Montlhéry, daughter of Guy I of Montlhéry and Hodierna of Gometz.
Joscelin and Elizabeth had five children: After Joscelin’s death, Elizabeth became a nun at St. John’s.
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