Walter Devereux, 1st Earl of Essex, was born 1539 to Richard Devereux (c1513-1547) and Dorothy Hastings (c1520-1547) and died 22 September 1576 Dublin, Ireland of dysentery. He married Lettice Knollys (1543-1634) 1561 JL .
|Offspring of Walter Devereux, 1st Earl of Essex and Lettice Knollys (1543-1634)|
|Penelope Devereux (c1562-1607)||January 1563||7 July 1607||Robert Rich, 1st Earl of Warwick (1559-1619) Robert Rich, 1st Earl of Warwick (1559-1619) Charles Blount, 1st Earl of Devonshire (c1562-1606)|
|Robert Devereux, 2nd Earl of Essex (1566-1601)||1566||25 February 1601||Frances Walsingham (1567-1633)|
|Dorothy Devereux (1564-1619)||1564||3 August 1619||Thomas Perrot (1553-1594) Thomas Perrot (1553-1594) Henry Percy, 9th Earl of Northumberland (1564-1632)|