Robert III de Béthune 
Robert III de's father was Robert II de Béthune. He was an only child. Robert III de is no longer alive.
He had a biological son named Robert IV de.
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Children
Robert IV de Béthune
Robert IV de was born about 1070 in Bethune,Pas-de-Calais,FRA. He died about 1123.
Source/Citation
Theroff
Theroff
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