Dorothea's brothers were Electors Frederick II and Albert Achilles, who successively ruled Brandenburg.
Margaret's husband, Albet V, however, had died shortly after the marriage.
[1] When a dispute arose later between Brandenburg and Mecklenburg about the inheritance of the principality of Wenden, the family ties between Duke Henry and Elector Frederick made it easier to reach a settlement.
Henry IV died in 1477 and after 1485 Dorothea lived as a nun in the Rehna convent.
Her grave stone is marked with an incised drawing of the Duchess as a nun, crowned by a canopy.