Question: Princess Christina Margarethe of Hesse, was the eldest daughter of Prince Christoph of Hesse, was the fifth son of Prince Frederick Charles of Hesse and Princess Margaret of Prussia, he was a German SS officer killed accidentally, during which historic event?
Sentence (from "Princess Christina Margarethe of Hesse"): From 1956 to 1962, she was married to Prince Andrew of Yugoslavia, with whom she had two children.
Relevant evidence: No