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Female Countess Aleidis of Hainault (Adelaide of Holland) Click to view Countess Aleidis of Hainault in the family tree

Aleidis was born in 1225 in Netherlands.1   Aleidis' father was Count Floris of Holland IV and her mother was Princess Mechtild of Brabant.  Her paternal grandparents were Count Guillaume of Holland I and Adelheid Von Guelders de Geldern; her maternal grandparents were Duke of Brabant Henry of Germany I and Maud d'Alsace. She had a brother and a sister, named Guillaume and Margaretha.  She died at the age of 59 in 1284 in Valenciennes, Nord, France.1 

Family Details of Aleidis' family with Count of Hainault Jean de Avesnes of Flanders I

1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I4243&style=TABLE
Further sources/citations:
http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I4243&style=TABLE, World Family Tree Volume 2

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