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Female Countess Of Flanders Bertha Click to view Countess Of Flanders Bertha in the family tree

Countess Of Flanders was born about 1008.1   Countess Of Flanders' father was Baudouin and her mother was Matilda of Saxony.  Her paternal grandparents were Arnolph and Adele DeVermandois; her maternal grandparents were Conrad I King Burgundy and Mathilde Princess Of Franks. She had a brother named Arnolph.  She was the younger of the two children.1 

1 phelps1609.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1609