to Henry. He acted autonomously by vesting Count Adolf of Schauenburg with the newly established County of Holstein in 1111. Lothair was temporarily deposed in 1112, when Henry transferred the ducal title to Otto of Ballenstedt. He was soon reinstated when count Otto fell into disgrace and he tactically submitted himself to Henry V. In 1115 however, he took command of the rebellious Saxon forces and defeated the emperor in the Battle of Welfesholz. Henry completely lost control over the administration and the revenue of Saxony. When in 1123 Henry V vested Count Wiprecht of Groitzsch with the Margraviate of Meissen, Lothair enforced the appointment of Conrad of Wettin and ceded the March of Lusatia to Count Albert the Bear. Reign Upon Emperor Henry V's death in 1125, Archchancellor Adalbert summoned the royal electoral assembly in Mainz. On August 24 the electors declined the candidacy of the primary contender Duke Frederick of Hohenstaufen, who destroyed his chances due to his appalling overconfidence (ambicone cecatus) and his refusal to accept free princely elections (libera electio). Adalbert of Mainz considered Lothair to be a suitable candidate. Although the most powerful territorial prince in Saxony, he was of advanced age (slightly over fifty years of age) and had no male heir, not the ideal prerequisites for a long dynastic line of kings. He was elected King of Germany and asserted himself against Leopold III of Austria and Charles the Good. His election was notable in that it marked a departure from the concept of hereditary succession as the electors preferred a sovereign with moderate powers after the Salian era of oppressio. Somewhat naive concerning the complex power struggle between the papacy and the empire, Lothair also consented to several symbolic acts that were subsequently interpreted by the Roman Curia as signaling acceptance of papal confirmation of his position. Duke Vladislaus I of Bohemia died in 1125. The succession was disputed among his surviving brother Soběslav I and his Moravian cousin Otto the Black, who was supported by Vladislaus' widow Richeza of Berg. In late 1125 Lothair joined Otto's side, who had advanced large sums of money. A military campaign against Soběslav was launched and in February 1126 Lothair's force entered Bohemian territory and was promptly defeated at the Battle of Chlumec. Soběslav captured high-ranking nobles, like Albert the Bear and Louis I of Thuringia. However, Soběslav immediately went to meet Lothair at his