Question: What is the date of birth of Princess Rosemary Of Salm-Salm's husband?
Sentence (from "Princess Rosemary of Salm-Salm"): Princess Rosemary of Salm-Salm  (13 April 1904, Potsdam, Kingdom of Prussia, Germany – 3 May 2001, Persenbeug Castle, Persenbeug-Gottsdorf, Austria) was a member of the princely House of Salm-Salm.
Relevant evidence: No