The elder sister of David Bowes-Lyon married a prince who was the last Emperor of what country?
David Bowes-Lyon Sir David Bowes-Lyon KCVO (2 May 1902 – 13 September 1961) was the sixth son of Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne, and Cecilia Nina Cavendish-Bentinck as well as their tenth and youngest child. His elder sister Lady Elizabeth Bowes-Lyon married Prince Albert, Duke of York, the second son of King George V, in 1923 and became Queen Consort of the United Kingdom after the abdication of her husband's elder brother Edward VIII on 11 December 1936.
Mirza Jahan Shah Shahzada Mirza Muhammad Jahan Shah Bahadur (also known as Prince Mirza Jehan Shah) (1795–1846) was the son of Prince Mirza Akbar, who became the Emperor Akbar Shah II in 1807. He was a younger brother of Emperor Bahadur Shah II and former Crown Princes Mirza Jahangir and Mirza Salim. His mother Selaa'h un-nissa, was the third wife of the Emperor. He was the last Mughal ruler of Assam before Mughals left Assam. The Prince was under house arrest by British where he died at Assam at the age of 51.