Humphrey of Gloucester, 2nd Duke of Gloucester, 2nd Duke of Aumale, KG (26 June 1381 – 18 October 1452) was an English peer and commander, serving the House of Lancaster faithfully all of his life.
Humphrey was the only son of Thomas of Woodstock, the youngest son of Edward III, and as such a powerful member within the royal family and a close friend of Henry V. Due to this friendship, Humphrey was at times deeply involved in the Angevin monarchy, going so far as ruling as regent of England many times after the Succession War for France.
Humphrey was the only son born to Thomas of Woodstock, and as such grew up in close proximity to the royal family.
After the murder of his father, he became the ward of the crown, along with Henry of Monmouth, eldest son and heir of Henry Bolingbroke. Richard II took both boys with him to Ireland in 1398, where they were left in custody at Kells, when Richard returned to face Bolingbroke. Once Richard II has been deposed, Henry Bolingbroke ordered their release and summoned them home. He welcomed Humphrey back and granted him his inheritance, namely the Duchies of Gloucester and Aumale.
During the early rebellions against Henry IV, Humphrey remained a stalwart supporter of the Lancastrian crown, answering the call-to-arms issued against the Percy family on many occassions and defending the Welsh Marches from repeated inccursions. During the Powys Rebellion, Humphrey joined his friend Henry and Richard Grey in the latter's campaign in the Welsh Marches.