[1] Walbert III's lineage traces to his great-grandfather, Albéron (Auberon or Alberic), son of Clodebald de Francie and grandson of Clodion the Hairy, King of the Franks.
Walbert I sought refuge with Emperor Zeno in Rome, marrying his daughter (or sister), Lucile of Pannonia.
[3][4] Walbert III, born to Walbert II and Clotilde (Rothilde), sister of King of the Visigoths Athalaric, was the brother of Vraye (wife of Mummolin, a general of King Sigebert III's Austrasian army) and Brunulf, Count of Cambrésis.
[5] Walbert II came into possession of the lordships that his father had in the various pagi including the Ardennes and Hainoensis (now Hainaut Province).
His daughter St. Amalberga married Witger, Count of Condat and father of St. Aubert, bishop of Cambrai.