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Male Pierre De Dreux Click to view Pierre De Dreux in the family tree

Pierre was born in 1220.  Pierre's father was Robert III Capet and his mother was Aléanor De St. Valery.  His paternal grandparents were Robert II Capet and Yolande de Coucy; his maternal grandparents were Thomas De St. Valery and Adele De Ponthieu. He had two brothers and a sister, named Robert IV, Jean I and Yolande.  He was the youngest of the four children.

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