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Male William de Dampierre II (Guillaume I de Dampierre) Click to view William de Dampierre II in the family tree

William was born in 1126 in Dampierre, Jura, France.1   William's father was Vicount de Troyes Guy de Dampierre I and his mother was Helvide de Roucy de Baudemont.  His paternal grandparents were Thibault de Dampierre and Elizabeth de Montlhery; his maternal grandparents were Seneschal de Champagne Andre de Roucy de Baudemont and Adele Agnes de Braine. He had two sisters named Agnes and Helvide.  He was the oldest of the three children.  He died at the age of 35 in 1161.2 

Family Details of William's family with Ermengarde Basilie de Mouchy

1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=michaelrneuman&id=I024141
2 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I133299&style=TABLE
Further source/citation:
http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I61424

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