Prince William of Gloucester from 0 to 30 years old

William Henry Andrew Frederick (December 18, 1941 - August 28, 1972) was a member of the British royal family. The elder son of Prince Henry, Duke of Gloucester, and Princess Alice, Duchess of Gloucester, he was a grandson of George V, nephew of Edward VIII and George VI, and first cousin of Elizabeth II.
Born at Hadley Common, Hertfordshire, he spent his early childhood at Barnwell Manor in Northamptonshire and later in Canberra, Australia, where his father served as Governor-General from 1945 to 1947. After returning to England, he received his education at Wellesley House School, then at Eton College.
A Cambridge and Stanford graduate, he joined the Foreign and Commonwealth Office serving in Lagos and Tokyo, before returning to take over royal duties. He led an active life, flying Piper aircraft, trekking through the Sahara, and hot air ballooning.
Prince William was the most recent descendant of George III to be diagnosed with porphyria, probably hereditary, which is conjectured to be the illness that caused George III's mental breakdown.
He died in 1972, aged 30, in an air crash while piloting his plane in a competition, becoming the first grandchild of King George V and Queen Mary to die.