Tag this record Born / Died Birth Date: 1626-00-00Death Date: 1675-00-00 Parents Mother: Howard, Elizabeth (1602/3 - 1671)Father: Mordaunt, John (1598/9 - 1643) Siblings Male Mordaunt, Henry (1623 - 1697) Primary Title 1st Viscount Mordaunt of Avalon Titles 1st Viscount Mordaunt of Avalon Details of Offices Bibliographic Sources View a list of abbreviations. The Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom. 1887–98 (8 vols); 1910–59 (13 vols). 6 vols. Gloucester: Alan Sutton, 1982 Oxford Dictionary of National Biography.