937 An attempted Magyar invasion is repelled, and the invaders turn off into France.
938 Otto quells rebellion of the dukes of Bavaria and Franconia and his own half brother Thankmar, who falls at the battle on the Eresburg.
939 Rebellion of Otto’s brother Henry aided by the duke of Lorraine. They are defeated at Birten, and call on French for help.
941 Henry, forgiven, becomes a firm ally of Otto, and is made duke of Bavaria (946).
944 Otto makes Conrad the Red, duke of Lorraine.
948 Otto appoints his son, Ludolf, duke of Swabia.
946-950 Otto interferes in the civil wars of France.
950 Successful war with the Wends. Submission of the duke of Bohemia.
951 First expedition of Otto into Italy to avenge wrongs of Adelheid. Marriage of Otto and Adelheid. Berengar II submits to Otto.
953 Rebellion of Ludolf and Conrad.