Princess Mary, Duchess of Gloucester and Edinburgh
Princess Mary, Duchess of Gloucester and Edinburgh was the eleventh child and fourth daughter of King George III and his consort Charlotte of Mecklenburg-Strelitz.
She married her first cousin, Prince William Frederick, Duke of Gloucester and... Wikipedia
Born: April 25, 1776, Buckingham Palace, London, United Kingdom
Died: April 30, 1857 (age 81 years), Gloucester House, London, United Kingdom
Spouse: Prince William Frederick, Duke of Gloucester and Edinburgh (m. 1816–1834)
Great-grandparents: George II of Great Britain, Caroline of Ansbach, Princess Magdalena Augusta of Anhalt-Zerbst, and more
Parents: George III and Charlotte of Mecklenburg-Strelitz