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Male Thierry von Bonngau I Click to view Thierry von Bonngau I in the family tree

Thierry was born in 0908 in Bonn, Nordrhein-Westfalen, Germany.1   Thierry's father was Eberhard of Bonngau I and his mother was Mathilde von Avalgau.  His paternal grandparents were Erenfried of Bonngau I and Adalgunde of Burgundy; his maternal grandparents were Count Hermann of Avalgau and <Unknown>. He had three brothers named Odoacre, Dietrich and Ehrenfeld.  He was the youngest of the four children.


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