Statue of Waldemar at the Mühlendamm Bridge in Berlin, created in 1894/95 by the sculptor Max Unger, prototype for the early monuments in the Siegesallee
In 1309, Waldemar attempted to take the city of Rostock, but the citizens shut the gates against him.[1] In 1312, Waldemar also waged war against Margrave Frederick I of Meissen. Frederick was captured and arrested; to regain his freedom, he had to cede the March of Lusatia as well as the towns of Torgau and Großenhain to Brandenburg and to pay a ransom of 32,000 silver Mark. In the Imperial election of 1314, Waldemar voted for the Wittelsbach candidate Louis IV against his Habsburg rival Frederick the Fair. In 1316, Waldemar again occupied Dresden until the feud with Meissen was finally brought to an end in 1317.
In the ongoing conflict with Prince Henry II of Mecklenburg, Waldemar supported the citizens of Stralsund against an impending Mecklenburg invasion and occupied the Lordship of Stargard, a former possession of Henry's late wife Beatrix of Brandenburg. Thereby, he provoked a large coalition of Mecklenburg, Werle, and the Kingdom of Denmark against him. In August 1316, Waldemar's troops were defeated near Gransee.[2] According to the 1317 Treaty of Templin, the margrave had to surrender Stargard and Neubrandenburg to Mecklenburg. He also had to waive the previous Pomerelian acquisitions of Schlawe and Stolp, which passed to Duke Wartislaw IV of Pomerania.
In 1309 he married his cousin Agnes (c. 1296–1334), a daughter of Margrave Hermann of Brandenburg-Salzwedel. The marriage remained childless.
Waldemar was the last governing member of the Brandenburg line of the Ascanian House. With the death of his cousin John V in 1317, the younger Salzwedel line of the Brandenburg margraves became extinct. From 1318 Waldemar also acted as a guardian for his minor cousin Henry II, Margrave of Brandenburg-Stendal. His advance towards the Prussian lands was resumed more than 200 years later, when both Brandenburg and the Duchy of Prussia were under the rule of the Hohenzollern dynasty.
After Waldemar's death, his wife Agnes secondly married Duke Otto of Brunswick-Göttingen in December 1319. When Waldemar's ward Henry II died in July 1320, the Brandenburg branch of the Ascanian house died out in 1320. As a reverted fief, the margraviate fell back to the Wittelsbach king Louis IV. In 1323, he enfeoffed his eldest son Louis with Brandenburg, ignoring the claims of the Ascanian princes of Anhalt.
In 1348, an impostor appeared in the Archbishopric of Magdeburg and successfully claimed that he was Waldemar, returning from pilgrimage to the Holy Land after somebody else had been buried in his place. Quickly gaining support due to the rivalries between the Wittelsbach and Luxembourg dynasties, King Charles IV reinvested him for about two years before "the last Ascanian" was unmasked and fled to the Anhalt court in Dessau, where he spent the rest of his life.
Ancestry
Ancestors of Waldemar, Margrave of Brandenburg-Stendal
