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.
Wilhelmina of Prussia, Princess of Orange Princess Wilhelmina of Prussia ("Frederika Sophia Wilhelmina"; 7 August 1751 in Berlin – 9 June 1820 in Het Loo) was the consort of William V of Orange and the de facto leader of the dynastic party and counter-revolution in the Netherlands. She was the daughter of Prince Augustus William of Prussia and Luise of Brunswick-Wolfenbüttel. Wilhelmina was the longest serving Princess consort of Orange.