Created by the monarch, Dukedoms are gradually becoming extinct - the last one was created by Queen Victoria. In this one-off documentary Michael Waldman meets some of the last vestiges of this level of British aristocracy, and asks what has become of those who remain.
　　In 2012 South African Bruce Murray found himself becoming the 12th Duke of Atholl and heading up the only private army in Europe - the Atholl Highlanders.
　　If Camilla Osborne had been a boy, she would have inherited her father’s Dukedom, but now there is no longer a Duke of Leeds.
　　The Duke and Duchess of St...