Question: What is the date of death of Dorothea Von Medem's husband?
Sentence (from "Dorothea von Medem"): Dorothea von Medem (3 February 1761 – 20 August 1821) was born a Gräfin (Countess) of the noble German Baltic Medem family and later became Duchess of Courland (a Baltic region).
Relevant evidence: No