Анна Иоанновна
Benigna Gottliebe was the daughter of the Baltic nobleman Wilhelm von (died in 1725) and his wife Anna Elisabeth von Wildemann. She was made a lady-in-waiting to the dowager duchess regent of Courland, Anna of Russia, in 1720, and in 1723 married to Anna's adviser Ernst Johann von Biron (Bühren). The marriage was reportedly arranged by Anna in an attempt to conceal her own relationship with Biron.