Tag this record Born / Died Birth Date: 1459Death Date: 1505 Parents Mother: Not identified, ( - )Father: Percy, Thomas (1422 - 1460) Siblings Female Egremont, Mary ( - ) Titles 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.