Herbert IV of Vermandois (1028–1080), Count of Vermandois, was the son of Otto of Vermandois and Parvie (Pavia or Patia).[1]
Herbert married Adele of Valois, daughter of Ralph IV of Valois[2] and Adele of Bar-sur-Aube. They had:
Adelaide's husband, Hugh, inherited the countships of Vermandois and Valois upon Herbert's death.[a][5]