AD), Northumbrian Anglo-Saxon missionary St. Adalbard (Adalbert I of Ostrevent, died 652), founder of Marchiennes Abbey and husband of St. Rictrude Saint-Adalbert
seigniory of Chimay and in 1160 the châtellenies of Valencians and of Ostrevent. Baldwin IV married Alice, heiress of Namur, and had the following children:
Montigny-en-Ostrevent is a commune in the Nord department in northern France. Communes of the Nord department "Répertoire national des élus: les maires"
Sailly-en-Ostrevent is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Sailly-en-Ostrevent lies about 12 miles (19 km)