Question: When did Từ Dụ's husband die?
Sentence (from "Từ Dụ"): Từ Dụ or Từ Dũ (20 June 1810 – 12 May 1902), born Phạm Thị Hằng (范氏姮), was the wife of Thiệu Trị and mother of Tự Đức.
Relevant evidence: Yes