[5] After seeking refuge with fifth-century East Roman Emperor Zeno, Walbert I married his sister Lucille of Pannonia.
[6] He was the father of another son, Ydulf, whom he had with Clothilde (or Rothilde) of Hainaut and the Adrennes, daughter of Athalaric, the King of Ostrogothic Italy.
[7][4] The eldest son of Walbert I, Ansbert the Senator, was appointed by Emperor Justinian as the marquisate of the Holy Empire on the Escaut and the duchy of Moselle, covering territory from Metz to Cologne, including Luxembourg.
[2][8] Ansbert supposedly married Princess Blitilde, daughter (or granddaughter) of Clotaire, and fathered Anchise and Arnoald, bishop of Metz.
[2] Count Walbert's alliance with the Thuringii sparked jealousy in King Clotaire, who governed the Kingdom of Soissons and the nearby lands of the pagus Hainoensis (present-day Hainaut).