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.
Shigeko Higashikuni Shigeko Higashikuni (東久邇成子 , Higashikuni Shigeko , 6 December 1925 – 23 July 1961) , born Shigeko, Princess Teru (照宮成子内親王 , Teru-no-miya Shigeko Naishinnō ) , was the wife of Prince Morihiro Higashikuni and eldest daughter of Emperor Shōwa and Empress Kōjun. She was the eldest sister to the present Emperor of Japan, Emperor Akihito.