Background
Her mother"s mother, Ursula Margaretha von Neitschütz, was a member of the noble Upper Lusatian family of Haugwitz and the wife of a Lusatian noble named Rudolf von Neitschütz. She had many lovers in her younger years, and one of them was the electoral prince of Saxony, John George, later Elector as John George III. Her eldest daughter, Magdalene Sibylle, called Billa, was officially recognized as the daughter of her husband but may have been the daughter of John George III. Later the Elector"s son and successor, John George IV, began an affair with Billa, which his father tried to prevent by banishing Ursula and Billa from court, suggesting a fear of incest. However, when John George III died, his son lived openly with Billa and tried to marry her.
Wilhelmina Maria Frederica was the product of their affair.
