Prince Henry, Duke of Gloucester

Prince Henry, Duke of Gloucester (Henry William Frederick Albert Windsor) (March 31, 1900-June 10, 1974) was the third son of King George V of the United Kingdom and Queen Mary and the brother of Kings Edward VIII (later Duke of Windsor) and George VI.

Prince Henry was born in 1900 in York Cottage, the residence on the Sandringham estate of the then Duke and Duchess of York, in the last full year in the life of his great-grandmother, Queen Victoria. In 1928, his father, by now king, created him as Duke of Gloucester, Earl of Ulster, and Baron of Culloden, three titles that linked him with the three parts of the United Kingdom, namely England, Scotand and Northern Ireland. In 1934, with the agreement of the Irish President of the Executive Council, Eamon de Valera, King George as King of Ireland made him a Knight of St. Patrick (KP), Ireland's chivalric order. It was the last time this now defunct order was awarded.

The Duke married Lady Alice Christabel Montagu Douglas Scott, a daughter of the Duke of Buccleuch, and they had two sons:

• HRH Prince William of Gloucester (1941 - 1972)
• HRH Prince Richard of Gloucester, now the 2nd Duke of Gloucester (born 1944)

He died in Barnwell, Northamptonshire. He was the last surviving Knight of St. Patrick.

Two steam locomotives were named in his honour, namely Great Western Railway Star class locomotive 4043 Prince Henry and British Railways 71000 Duke of Gloucester.