His parents are William Bradley and Mary Price (Rowton). married in 1770, cumberland co virginia.
marriage source: http://www.jstor.org/stable/1919079?seq=1#page_scan_tab_contents (pg 27)
Her parents are William Morton Rowton and Elizabeth Rowton (Price). Interestingly enough, William Morton Rowton was an orphan who designated Col. Harrison (Elizabeth's grandfather) as his guardian.
Charles City County VA March Court 1742
p. 240 William Routon, son and orphan of John Routon, dec'd, chooses Col. Benjamin Harrison as his guardian.