sentences:  The election of Bertulf was a provocation to Louis the German, who then set up his own candidate.This was Bertulf's brother Waldo, abbot of St. Maximin's Abbey in Trier.Eight years previously, he had been convicted of disloyalty at the Imperial Diet in Regensburg along with his brothers Udo and Berengar and their uncle Ernest, and like them, had been stripped of his offices and titles.