Question: What is the date of death of Empress Xiaoduanwen's husband?
Sentence (from "Empress Xiaoduanwen"): Empress Xiaoduanwen (31 May 1599 – 28 May 1649), of the Khorchin Mongol Borjigit clan, personal name Jerjer, was a consort of Hong Taiji.
Relevant evidence: Yes