[1] Between these two dates, in 1129, Gislebert, Count of Duras, sought to seize the property of the Abbey of Sint-Truiden.

A war developed between Giselbert and the supporters of the abbot Radulphe, whose allies included Count Arnold of Loon (Arnold I and/or II), Théoger, Bishop of Metz, Alexander I of Jülich, Bishop of Liege, and Waleran II, Duke of Lower Lorraine.

The decisive battle took place on 7 August 1129 at Wilderen where Gislebert and his allies were defeated, but peace did not return in 1131.

He founded the Abbey of Averbode, which belonged to the Order of Canons Regular of Prémontré that St. Norbert had created.

He was welcomed with great distinction at the court of the emperors of Germany, and his name frequently appears among the witnesses mentioned in the charters granted by Emperors Henry IV, Henry V and Lothair II, and King of Germany Conrad III.