Ο William Henry, William Henry, Duke of Gloucester (1743-1805) was a member of the British royal family, son of George III and Queen Charlotte. Despite his high birth, William Henry did not become king, but was an important title and military leader, particularly known for his active participation in the wars of his time.

As Duke of Gloucester, he played an active role in the political life of Britain and in strengthening its military presence. He served with the British Navy and was promoted to officer, gaining considerable experience and recognition. During his career, he influenced many of the strategic and political decisions of the Royal Household.

As far as Freemasonry is concerned, William Henry was a member of the Brotherhood. However, the specific degrees he held are not clearly recorded. His tectonic connections are consistent with the tradition of noble and royal members participating in Freemasonry at the time, and his name appears in tectonic records.

He was a member of the United Grand Lodge of England, the leading Masonic organisation in Britain at the time. Like many nobles and royalty of the time, he is likely to have held various masonic ranks.

William Henry died in 1805 in London.