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The Duke and Duchess of Gloucester on their wedding day. Princess Alice, formerly the Duchess of Gloucester, will celebrate her 100th birthday on Christmas Day 2001. * Princess Alice, the Queen's aunt and dowager Duchess of Gloucester longevity is surpassed within the Royal Family by only the Queen Mother who is 17 months her senior. * 19/08/2003: Princess Alice, the Queen's 101-year-old aunt, who becomes the oldest British Royal in history tomorrow, Wednesday August 20, 2003. The dowager Duchess of Gloucester overtakes the Queen Mother's record longevity with a lifespan of 37,128 days. Born on Christmas Day 1901, Alice was 17 months younger than the Queen Mother when the widow of George VI died on March 30, 2002. (Photo by PA Images via Getty Images)

The Duke and Duchess of Gloucester on their wedding day. Princess Alice, formerly the Duchess of Gloucester, will celebrate her 100th birthday on Christmas Day 2001.   * Princess Alice, the Queen's aunt and dowager Duchess of Gloucester longevity is surpassed within the Royal Family by only the Queen Mother who is 17 months her senior. * 19/08/2003: Princess Alice, the Queen's 101-year-old aunt, who becomes the oldest British Royal in history tomorrow, Wednesday August 20, 2003. The dowager Duchess of Gloucester overtakes the Queen Mother's record longevity with a lifespan of 37,128 days. Born on Christmas Day 1901, Alice was 17 months younger than the Queen Mother when the widow of George VI died on March 30, 2002.   (Photo by PA Images via Getty Images)