Anne Plantagenet, Countess of Eu

Anne of Gloucester, Countess of Stafford (30 April 1383 – 16 October 1438) was the eldest daughter and eventually sole heiress of Thomas of Woodstock, 1st Duke of Gloucester (the fifth surviving son and youngest child of King Edward III), by his wife Eleanor de Bohun, one of the two daughters and co-heiresses of Humphrey de Bohun, 7th Earl of Hereford, 6th Earl of Essex (1341–1373) of Pleshey Castle in Essex.