and ally with her brother Hucbert to maintain his position. Lothair put away Teutberga as Hucbert's importance waned, but after she passed a trial by ordeal he was forced to take her back. Hucbert died in revolt in 864 after being replaced in Lothair's court.

In 858, Louis the German unsuccessfully invaded West Francia, but Lothair helped negotiate a peace between Louis and Charles the Bald