Question: What is the date of death of Franciszka Krasińska's husband?
Sentence (from "Charles of Saxony, Duke of Courland"): Prince Karl Christian Joseph of Saxony - in English, Charles of Saxony - (13 July 1733 – 16 June 1796) was a German prince of the House of Wettin and Duke of Courland and Semigallia.
Relevant evidence: Yes