Kchessinska, who was of Polish descent, was Catholic, but they were married in a simple ceremony in the Russian Orthodox Church of St. Michael Archangel in Cannes on 30 January 1921. Grand Duke Andrei also claimed paternity of Kchessinska's son, Prince Vladimir Romanovsky-Krasinsky (30 June 1902 – 23 April 1974). In 1924, Grand Duke Andrei's eldest brother, Kirill, proclaimed himself Tsar in exile. Grand Duke Andrei supported his brother's claim. Grand Duke Kirill granted to Mathilde and her son the titles of Princess and Prince Romanovsky-Krasinsky, with the treatment of Serene Highness. During their first years in exile, Grand Duke Andrei and his wife were in better economic circumstances than many of the other Romanovs. Tsar Nicholas II made his relatives sell their properties abroad, repatriating their fortune to Russia during the war, but Grand Duke Andrei was able to keep Villa Alam in Cap-d'Ail because the property was under Mathilda's name. To have cash flow and maintain his standard of living, Andrei sold the jewel collection that he inherited from his mother, and he mortgaged Villa Alam. For the next years, they settled there, entertaining lavishly and living in style. They traveled frequently to Paris, and Grand Duke Andrei was also active in philanthropic work, raising funds for Russian refugees. In 1928, Grand Duke Andrei became one of the few members of the Romanov family to believe the claim of Anna Anderson, the best known of several impostors who claimed to be the youngest daughter of Tsar Nicholas II, Grand Duchess Anastasia. Anderson was on the eve of her first trip to the United States when Grand Duke Andrei visited her once in January 1928. After their meeting, he said it was "an unshakable recognition … Her face is striking in its profound sadness, but when she smiles, it is she, it is Anastasia, without a doubt." Although he had not been particularly close to Nicholas II and his family, Grand Duke Andrei had met the real Anastasia in family events through the years and while in service as aide-de-camp to the Tsar. Grand Duke Kirill protested his brother's support of Anderson and discouraged his intervention in the case. In later years, Grand Duke Andrei recanted his opinion. Grand Duke Andrei and his wife liked to gamble. Mathilde dissipated their remaining wealth, including her own valuable jewel collection, at the gambling tables of Monte Carlo—the remainder was lost in