Dorothy Percy, Countess of Northumberland English noble (1564–1619) Parents Lettice Knollys Walter Devereux, 1st Earl of Essex Children Elizabeth Perrot Henry Percy, Baron Percy Dorothy Perrot Henry Percy, Baron Percy Henry Percy, Baron Percy of Alnwick Lucy Hay, Countess of Carlisle Algernon Percy, 10th Earl of Northumberland Penelope Perrot Dorothy Sidney, Countess of Leicester Siblings Robert Devereux, 2nd Earl of Essex Penelope Rich, Lady Rich Walter Devereux Robert Dudley, Baron of Denbigh Partners Henry Percy, 9th Earl of Northumberland Thomas Perrot
