Ralph Percy English noble (1425–1464) Parents Eleanor Percy, Countess of Northumberland Eleanor de Acton Henry Percy, 2nd Earl of Northumberland Children Sir Henry Percy, of Bamburgh Catherine Percy Margaret Percy Siblings Thomas Percy, 1st Baron Egremont Katherine Percy Henry Percy, 3rd Earl of Northumberland William Percy John Percy Alan Percy Richard Percy George Percy Lady Joan Percy Margaret Percy Sir Henry Percy, of Bamburgh Partners Eleanor de Acton