Question: Prince William, Duke of Gloucester and Prince George of Denmark, were eventually monarchs of which Kingdom?
Related documents: [0]  [DOC] Prince George of Denmark and Norway, Duke of Cumberland (Danish: "Jørgen" ; 2 April 165328 October 1708), was the husband of Queen Anne, who reigned over Great Britain from 1702. [END] 
[1]  [DOC] Prince William, Duke of Gloucester (24 July 1689 – 30 July 1700 ) was the son of Princess Anne, later Queen of England, Ireland and Scotland from 1702, and her husband, Prince George, Duke of Cumberland. He was their only child to survive infancy. Styled Duke of Gloucester, he was viewed by contemporaries as a Protestant champion because his birth seemed to cement the Protestant succession established in the "Glorious Revolution" that had deposed his Catholic grandfather James II the previous year. [END] 
Answer: 
Great Britain
Great Britain