Gambler, Olympian, co-conspirator in the murder of Rasputin, grandson of Tsar alexander II, and lover of Coco Chanel. Primary sources include the Royal Archives at Windsor Castle, the Police Archives in Paris, and mostly importantly Dmitri's own private journals, which are at Harvard and remain largely unpublished - Dmitri's royal connections provide the constant background of his life from pre-Revolution Russia to the inter-war period of European history Edward Hansen is the author of The Wandering Princess: Princess Hélène of France, Duchess of Aosta (1871-1951) (Fonthill Media, 2017) as well as shorter biographical sketches in academic works including The American National Biography and Sibley's Harvard Graduates.