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Male Yves IV , Count of Beaumont-sur-Oise de Beaumont Click to view Yves IV , Count of Beaumont-sur-Oise de Beaumont in the family tree

Yves IV , Count of Beaumont-sur-Oise was born about 1005 in Beaumont.  Yves IV , Count of Beaumont-sur-Oise's father was Yves III de Beaumont and his mother was Gisela de Chevreuse.  His paternal grandfather was Yves II Bellemontesis.  He was an only child.


Yves IV , Count of Beaumont-sur-Oise's family with Adelaide de Gournay

They had a daughter named Adeliza.

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