Princess Alexandra, The Honourable Lady Ogilvy, LG, GCVO, CD (Alexandra Helen Elizabeth Olga Christabel; born 25 December 1936) is the youngest granddaughter of King George V of the United Kingdom and Mary of Teck. She is the widow of Sir Angus Ogilvy. Prior to her marriage she was known as Princess Alexandra of Kent, being the first princess to use the territorial designation of Kent since Queen Victoria, who was, prior to her accession, known as Princess Alexandrina Victoria of Kent.
Princess Alexandra carries out royal duties on behalf of her cousin, Queen Elizabeth II. As of January 2011 she is 39th in the line of succession to the thrones of 16 states; at the time of her birth in 1936, she was sixth in line to the thrones of seven countries.
For more information about her: http://www.royal.gov.uk/ThecurrentRoyalFamily/PrincessAlexandra/Background.aspx