Tag this record Born / Died Birth Date: 1337-01-13Death Date: 1384-06-08 Parents Marriages/Other Unions Stafford, Beatrice de ( - 1415)Type: marriageUnion began: n.d.Union ended: n.d. Offspring From Stafford, Beatrice de ( - 1415)Female offspring: Ros, Elizabeth de ( - 1424) Primary Title 4th Baron Ros of Helmsley Titles 4th Baron Ros of Helmsley 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.