Question: When is Trang Ý's husband's birthday?
Sentence (from "Trang Ý"): Trang Ý (20 June 1828 – 3 June 1903), born Vũ Thị Hài or Vũ Thị Duyên, was the wife of Tự Đức and adopted-mother of Dục Đức.
Relevant evidence: Yes