Magdalena was the daughter of Elector Frederick I of Brandenburg (1371–1440) from his marriage to Elizabeth (1383-1442 ), daughter of Duke Frederick "the Wise" of Bavaria-Landshut.

Magdalene's brothers were Electors of Brandenburg, one after the other, first Frederick II, then Albrecht III Achilles.

She married on 3 July 1429 in Tangermünde with Duke Frederick II of Brunswick-Lüneburg (1418–1478).

Magdalena brought a dowry of 10000Rhenish guilders into the marriage, for which Wichard von Rochow had vouched, and was promised Bodenteich Castle as her wittum, but later received the city and castle of Lüchow instead.

[2] From her marriage Magdalena had the following children: This article about a German duchess is a stub.