The Chronicon S. Huberti Andaginensis records that, after the death of their father, "Gerardus et Gozwinus filii eius [=Theodericum]" donated “sex mansos allodii apud Bridam, quæ sub Traiecto sita est in Taxandria”, dated to 1082. The Gesta Abbatum Trudonensium records that "Gerardum…de castello…Guassenberge et Gozwinum avunculum eius de castello…Heinesberge" introduced abbot Luipo into the abbey of Saint-Trond in 1085.