Herbert III, Count of Vermandois French noble (0954–0993) Parents Gerberge of Lorraine Adalbert I, Count of Vermandois Children Adalbert II of Vermandois Otto, Count of Vermandois Agnes de Vermandois Stephen de Vermandois Siblings Otto I of Chiny Guy I, Count of Soissons Liudolf of Vermandois Partners Eadgifu of Wessex Hermengarde