Question: When is Purachatra Jayakara's father's birthday?
Sentence (from "Purachatra Jayakara"): His Royal Highness Prince Purachatra Jayakara, Prince of Kamphaengphet (23 January 1881 – 14 September 1936) was a Prince of Siam and a member of the Siamese Royal Family (later Thailand).
Relevant evidence: No