Walbert IV

[8] Walbert IV served first in the royal court of King Clotaire II and later under his son, Dagobert I, during both their reigns.

[5] During his youth, he resided in the royal court of Clotaire II as a domesticus[9] (and later regent), then withdrew to his lands and settled in the castle of Cousolre, constructed by his ancestors.

[10] He became a lord of Lower Austrasia, whose duchy covered Cambrésis, Hainaut, Brabant, Hesbaye, Ardennes, and extended to the Rhine.

[14] Saint Walbert IV died around c. 640-646 AD in Cousolre, pagus Hainoensis, Austrasia, Francia (now Belgium).

In 1552, a stone with the inscription: "Hubertus Tongrensis Epifcopus poftquam elevasset S Walbertum & S Bertilliam elevavit S Waldetrudem presente Carolo Magno Imperatore" was discovered in a wall of the Old Church of Cousolre.