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Male Duke Wilhelm of Julich VI Click to view Duke Wilhelm of Julich VI in the family tree

Wilhelm was born in 1318 in Julich, Rheinland, Prussia.1   Wilhelm's father was Duke Wilhelm of Julich V and his mother was Johanna of Holland.  His paternal grandparents were Count Gerhard of Jhulich V and Elizabeth de Brabant; his maternal grandparents were Count of Hainault William D'Avesnes III and Joan Jeanne de Valois. He had a brother and three sisters, named Gerhard, Johanne, Elizabeth and Philippa.  He was the third oldest of the five children.  He died at the age of 75 on December 13th, 1393.1 

Family Details of Wilhelm's family with Princess Marie of Guelders

1 http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=bevangenealogy&id=I32782&style=TABLE
Further source/citation:
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=bevangenealogy&id=I32787

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