 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.