Otto V, Margrave of Brandenburg-Salzwedel

The Ascanians Otto (V.) of Brandenburg (c. 1246, † 1298 ), called " the tall one", the son of Otto III was. and as co-regent with his cousin Margrave Otto IV.

Otto lived for many years at the court of Přemyslids Ottokar II in Prague, with whom he was related.

Ottokar had used him as guardian of his son Wenceslas II. As Ottokar 1278 died on the battlefield, his son was only seven years old. Otto Lange ruled now as guardian Wenceslaus five years as regent in Bohemia. He held the throne under strict control and brought it because of conflicts with the Queen Dowager Cunegond of Halych and parts of the Bohemian nobility even out of the country to Brandenburg, where he had it under control. Before he finally left Wenzel to the government, he forced the young king, he assign his claims to the Upper Lusatia.

Otto Lange could also persistently defend its claims to Pomerania against Polish claims.

Otto's first wife was Catherine, daughter of the Duke Przemysl I of Great Poland. His second wife was Judith of Henneberg - Coburg, the daughter of Count Hermann I of Henneberg. Their extensive dowry, the "new rule " of the county of Henneberg, he was an administrator, Count Wolfgang von Barby, manage, resulting in the maintenance of Coburg was born.