In 1026, he inherited Luxembourg from his uncle Henry I. This included charge of the abbeys of Saint-Maximin in Trier and Saint-Willibrord in Echternach. In 1042, he was given Bavaria by the Emperor Henry III, who had hitherto held it, but who needed a resident duke to deal with the raids of Samuel Aba, king of Hungary.
He never married. His uncle Giselbert succeeded him in Luxembourg, while Bavaria escheated to the emperor, who gave it to Cuno.