Guillaume was the son of Guillaume III d'Estaing and Ermengarde de Peyre. The date and place of his birth have not been found.
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Guillaume III d'Estaing |
Raimond I d'Estaing |
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Richarde de Sévérac |
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Ermengarde de Peyre |
Astorg IX de Peyre |
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Marguerite de Murat |
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