Devereux was the son of Robert Devereux, 2nd Earl of Essex and his mistress, Elizabeth Southwell Walter Bourchier Devereux.
Devereux was the son of Robert Devereux. Devereux was the son of 2nd Earl of Essex. Devereux was the son of his mistress. Elizabeth Southwell Walter Bourchier Devereux was his mistress.