Question: During what war was the father of the Princess who was married to two men, one being a London based Dutch artist?
Sentence (from "Princess Christina Margarethe of Hesse"): Princess Christina Margarethe of Hesse (German: "Prinzessin Christina Margarethe von Hessen" ; 10 January 1933 – 22 November 2011) was the eldest daughter of Prince Christoph of Hesse and Princess Sophie of Greece and Denmark.
Relevant evidence: Yes