Prince Henry, Duke of Gloucester (d. 1974)
Prince Henry, Duke of Gloucester, (Henry William Frederick Albert; 31 March 1900 – 10 June 1974) was the third son and fourth child of King George V and Queen Mary. He served as Governor-General of Australia from 1945 to 1947, the only member of the British royal family to hold the post.

Henry was the first son of a British monarch to be educated at school, where he excelled at sports, and went on to attend Eton College, after which he was commissioned in the 10th Royal Hussars, a regiment he hoped to command. However, his military career was frequently interrupted by royal duties, and he was nicknamed "the unknown soldier". While big-game shooting in Kenya, he met the future pilot Beryl Markham, with whom he became romantically involved. The court put pressure on him to end the relationship, but he had to pay regular hush-money to avert a public scandal. In 1935, also under parental pressure, he married Lady Alice Montagu Douglas Scott, with whom he had two sons, Princes William and Richard.

From 1939 to 1940, Henry served in France as a liaison officer to Lord Gort. He performed military and diplomatic duties during the rest of the war, then in 1945 was appointed as Australia's governor-general at the request of Prime Minister John Curtin. The post had originally been offered to his younger brother, the Duke of Kent, who died in an air crash. Henry attended the coronation of his niece Queen Elizabeth II in 1953 and carried out several overseas tours, often accompanied by his wife. From 1965, he became incapacitated by a number of strokes. Upon his death, he was succeeded as the Duke of Gloucester by his only living son, Richard.

Prince Henry was the last surviving child of King George V and Queen Mary. His widow, who died at the age of 102, became the longest-lived ever member of the British royal family.