 From her previous marriage she was mother to a younger Walter Devereux, paternal grandmother to Walter Devereux, Lord Chancellor of Ireland, and great-grandmother to Anne Devereux, Countess of Pembroke.Parr's maternal grandparents were Sir Thomas Tunstall of Thurland Castle and Isabel Harrington, a grandaunt of Sir Thomas Stanley, 1st Earl of Derby.By his maternal grandfather, Parr was a cousin to Bishop Cuthbert Tunstall.