Question: When did Duchess Charlotte Frederica Of Mecklenburg-Schwerin's husband die?
Sentence (from "Duchess Charlotte Frederica of Mecklenburg-Schwerin"): Duchess Charlotte Frederica of Mecklenburg-Schwerin (4 December 1784 – 13 July 1840), was the first wife of King Christian VIII from 1806 until 1810, before he became King of Denmark.
Relevant evidence: Yes