Question: When did Patricia Knatchbull, 2Nd Countess Mountbatten Of Burma's father die?
Sentence (from "Louis Mountbatten, 1st Earl Mountbatten of Burma"): Admiral of the Fleet Louis Francis Albert Victor Nicholas Mountbatten, 1st Earl Mountbatten of Burma (born Prince Louis of Battenberg; 25 June 1900 – 27 August 1979) was a British Royal Navy officer and , an uncle of Prince Philip, Duke of Edinburgh, and second cousin once removed of Queen Elizabeth II.
Relevant evidence: Yes