Joan de Dammartin , of Ponthieu 
Joan de was born in 1216 in Dammartin, Seine-et-Marne, France. Joan de's father was Simon II de Dammartin , Count of Aumale and her mother was Marie Countess of Ponthieu. She was an only child. She died in Abbeville, France.
Joan de and Ferdinand III "The Saint" King of Leon & were married in a religious ceremony in 1237 in Burgos, Spain.
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