Walter Scott | Sir Walter Scott | Hereford | Walter Cronkite | Louis Mountbatten, 1st Earl Mountbatten of Burma | Horatio Nelson, 1st Viscount Nelson | Viscount | Herbert Kitchener, 1st Earl Kitchener | Walter Raleigh | Walter Benjamin | Vickers Viscount | Charles Cornwallis, 1st Marquess Cornwallis | 1st United States Congress | Frederick Roberts, 1st Earl Roberts | Bernard Montgomery, 1st Viscount Montgomery of Alamein | William Cecil, 1st Baron Burghley | Walter Mondale | Robert Harley, 1st Earl of Oxford and Earl Mortimer | George Villiers, 1st Duke of Buckingham | Walter Matthau | William Howe, 5th Viscount Howe | Walter Gropius | Thomas Wentworth, 1st Earl of Strafford | William Pitt, 1st Earl of Chatham | Walter Hamma | viscount | Joseph Lister, 1st Baron Lister | Robert Baden-Powell, 1st Baron Baden-Powell | John Scott, 1st Earl of Eldon | Henry Brougham, 1st Baron Brougham and Vaux |
The Baronet was the fourth son of Walter Devereux, 1st Viscount Hereford by either his first wife Mary Grey or his second wife Margaret Garneys.
Essex was probably named after her maternal grandfather the 1st Earl of Essex.
Walter Devereux was the eldest son of Sir Richard Devereux, who was admitted to the Order of the Garter on 20 February 1548 and died in the same year, in the lifetime of his father, Walter Devereux, 1st Viscount Hereford.
In 1523, the Baron was created a Knight of the Garter by Henry VIII of England alongside diplomat Thomas Boleyn, later Earl of Wiltshire.