Dorothy Sidney, Countess of Leicester
1598 – 20 August 1659 ) , was the eldest daughter of Henry Percy , 9th Earl of Northumberland , and his wife , Lady Dorothy Devereux . 
<triplet> Henry Percy, 9th Earl of Northumberland <subj> Lady Dorothy Devereux <obj> spouse <triplet> Lady Dorothy Devereux <subj> Henry Percy, 9th Earl of Northumberland <obj> spouse