 In exchange for this surrender, Henry II allowed Herman II to remain Duke of Swabia until his death the following year, after which, although recognizing the minor Hermann III as his father's titular successor, Henry II effectively assumed all power over the Duchy himself.In 1003, Margrave of Nordgau Henry of Schweinfurt in Bavaria revolted against Henry II's rule.Henry II had promised to install the Margrave as his successor to the Duchy of Bavaria in exchange for supporting his claim to the German crown.