After the defeat by Lothair of Henry's forces at Welfesholz on the 11th of February 1115, events called Henry to Italy; and Lothair appears to have been undisturbed in Saxony until 1123, when the death of Henry II., margrave of Meissen and Lusatia raised a dispute as to the right of appointment to the vacant margraviates.
He accordingly ravaged their country in 791 at the head of an army containing Saxon, Frisian, Bavarian and Alamannian warriors, which penetrated as far as the Raab; and he spent the following year in Bavaria preparing for a second campaign against them, the conduct of which, however, he was compelled by further trouble in Saxony to entrust to his son king Pippin, and to Eric, margrave of Friuli.
In 1253 it was raised to the rank of a town by the margrave John I.
In north German politics he interfered vigorously to protect his brotherin-law the Margrave Louis of Brandenburg against the lords of Mecklenburg and the dukes of Pomerania, with such success that the emperor, Charles IV., at the conference of Bautzen, was reconciled to the Brandenburger and allowed Valdemar an annual charge of 16,000 silver marks on the city of Lubeck (1349) Some years later Valdemar seriously thought of reviving the ancient claims of Denmark upon England, and entered into negotiations with the French king, John, who in his distress looked to this descendant of the ancient Vikings for help. A matrimonial alliance between the two crowns was even discussed, and Valdemar offered, for the huge sum of 600,000 gulden, to transport 12,000 men to England.
In July 1346 five of the electors met, and, having declared Louis deposed, they raised Johns son Charles, margrave of Moravia, to the German throne.
Taking the title margrave of Brandenburg, he pressed the warfare against the Wends, extended the area of his mark, did much for the spread of Christianity and civilization therein, and so became the founder of the margraviate of Brandenburg.
Once more the road to Vienna lay open, but the grand vizier wasted the remainder of the year in fortifying Belgrade, and on August 18th, 1691, he was defeated and slain at Slankamen by the margrave of Baden.
A castle is said to have been founded on the site of Wolfenbuttel by a margrave of Meissen about 1046.
About 951 Adelaide, widow of Lothair, son of Hugh, king of Italy, having refused to marry the son of Berengar, margrave of Ivrea, was cast into prison and cruelly treated.
In 1552 he was raised to the dignity of Rigsraad (councillor of state); in 1554 he successfully accomplished his first diplomatic mission, by adjusting the differences between the elector of Saxony and the margrave of Brandenburg.