King George V and Queen Mary
A pictorial history of King George V and their children
Prince Rupert of Teck (24 August 1907--15 April 1928), 2nd child and eldest son of Princess Alice of Albany and her husband Prince Alexander of Teck. After his father was made Earl of Athlone during WWI Prince Rupert became Rupert Cambridge, Viscount Trematon. Like so many of QV's male descendants, Prince Rupert had hemophilia. He died of a cerebral hemorrhage caused by a car crash in 1928. He was 4 months shy of his 21st birthday.