Bonabes was the son of Guillaume III de Derval and Aliénor de Châteaubriant. The date and place of his birth have not been found.
His wife is not known. They were married, but the date and place have not been found. Their two known children were Guillaume IV (?-1275) and Bonabes III (?-1325).
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Anne de Rostrenen |
Riwallon II de Rostrenen |
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Theophanie de Lanvaux |
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Geoffroy VI de Châteaubriant |
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