As she was oldest daughter of the Elector Frederick, who had no surviving sons, the marriage agreement was important.
In addition to a 10000 florins dowry, Frederick promised his son-in-law everything that he could legally leave to his daughter.
Later, however, Frederick abdicated in favour of his younger brother Albert Achilles, so as to keep his possessions in the family.
This led Dorothea's uncle John the Alchemist (1406 – 1464) to compare himself with the Elector Frederick.
[1] From her marriage with John of Saxony, Angria and Westphalia, as he was officially titled, Dorothea had the following children: