The elder sister of David Bowes-Lyon married a prince who was the last Emperor of what country?
George VI George VI (Albert Frederick Arthur George; 14 December 1895 – 6 February 1952) was King of the United Kingdom and the Dominions of the British Commonwealth from 11 December 1936 until his death. He was the last Emperor of India and the first Head of the Commonwealth.
Augusta Victoria of Schleswig-Holstein Augusta Victoria of Schleswig-Holstein (Auguste Viktoria Friederike Luise Feodora Jenny; 22 October 1858 – 11 April 1921) was the last German empress and queen of Prussia by marriage to Wilhelm II, German Emperor.