Question: What is the date of death of Isaravongs Vorarajakumara's father?
Sentence (from "Chulalongkorn"): (Thai: จุฬาลงกรณ์; RTGS: Chunlalongkon; 20 September 1853 – 23 October 1910), was the fifth monarch of Siam under the House of Chakri.
Relevant evidence: Yes