Question: What is the date of death of Duchess Therese Of Mecklenburg-Strelitz's husband?
Sentence (from "Duchess Therese of Mecklenburg-Strelitz"): Duchess Therese Mathilde Amalie of Mecklenburg-Strelitz (5 April 1773 – 12 February 1839) was a member of the House of Mecklenburg-Strelitz and a Duchess of Mecklenburg.
Relevant evidence: No