Gilbert de Clare, 7th Earl of Gloucester, English officer (born 1243)

Gilbert de Clare, 6th Earl of Hertford, 7th Earl of Gloucester was a powerful English magnate. He was also known as "Red" Gilbert de Clare or "The Red Earl", probably because of his hair colour or fiery temper in battle. He held the Lordship of Glamorgan which was one of the most powerful and wealthy of the Welsh Marcher Lordships as well as over 200 English manors.