Question: What is the date of death of Rambai Barni's husband?
Sentence (from "Rambai Barni"): Rambai Barni , formerly Princess Rambai Barni Svastivatana (born 20 December 1904 – 22 May 1984), was the wife and Queen Consort of King Prajadhipok of Siam.
Relevant evidence: Yes