Isabel de Crepi de VERMANDOIS 
Isabel de Crepi de was born about 1081 in Vermandois, Normandy, France. She died in St. Nicaise-de Meulan, France.
They had a son named Waleran IV de.
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Children
Waleran IV de BEAUMONT-LE-ROGER
Waleran IV de was born in 1104 in Meulan, Ile-de-France, France. He died at the age of 62 on April 10th, 1166 in Abbey de Preaux, Normandy, France.