Count Baldwin IX De Hainault Of Flanders 
Baldwin IX's father was Count Baldwin V De Hainault and his mother was Margaret De Flanders. He had a brother and two sisters, named Henry, Isabella and Yolande. He died due to Assassinated in 1205 in Flanders,Adrianople.General Notes
Count of Flanders, Hainault and Namur. Elected Emperor of Constantinople as Baldwin I in
1204. He was slain the following year.
See Europäisch Stammtafeln Bund II tafel 10.
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