Family:Guillaume Unknown and Isabelle De Pontrochart (1)
Parents: William of Béthune and Mathilda of Dendermonde
Guillaume _____, Seigneur de Bethune III
b. Abt 1202
d. 12 Jan 1243
 
Isabelle de Pontrochart
b. Abt 1202
 
Children
BirthDeath
1.
Mathilde de Béthune
Abt 1220
Aft 1267
Add child


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