In 938 it was given by the German king, Otto I., the Great, to Arnulf's brother, Bertold I., with greatly reduced privileges.
Arnulf's younger son, Arnulf II., continued the struggle against Otto I., and sometime before his death in 954 was made count palatine in Bavaria.
When Charles of Lorraine, Arnulf's uncle, and the son of Louis IV.
He has left us two detailed accounts of the proceedings of the council of St Basle; and, despite his reticence, it is impossible to doubt that he was the moving spirit in Arnulf's deposition.
Arnulf's real authority did not extend far beyond the confines of Bavaria, and he contented himself with a nominal recognition of his supremacy by the kings who sprang up in various parts of the Empire.
A similar conflict took place between Arnulf's son and successor Eberhard and Otto the Great; but Eberhard was less successful than his father, for in 938 he was driven from Bavaria, which was given by Otto with reduced privileges to the late duke's uncle, Bertold; and a count palatine in the person of Eberhard's brother Arnulf was appointed to watch the royal interests.
Before receiving his bishopric, Arnulf had had a son Adalgiselus, afterwards called Anchis; Pippin's daughter, called Begga in later documents, was married to Arnulf's son, and of this union was born Pippin II.