Anderson died in 1984 and her body was cremated. In 1994, a tissue sample from Andersen in a hospital was used for DNA tests with the blood of Prince Philip, Duke of Edinburgh. Prince Philip was a grandnephew of Empress Alexandra. Dr. Gill, who did the tests, decided that if "you accept that these samples came from Anna Anderson, then Anna Anderson could related to Tsar Nicholas or Tsarina Alexandra." Anderson's DNA matched with a great-nephew of Franziska Schanzkowska, a missing Polish factory worker. Some people who supported Anderson agreed that the DNA tests showed she could not have been the Grand Duchess.