Descendents of Dr. John Walton, Sr. (1709-1772 VA)

My line from Dr. Walton (m. Mary Sims) is through his son John, Jr. (Mary Baker) > Martin (Elizabeth Johnson) > Simeon (Mary Henry) > Nelson (Marticia Shofner) > Cordelia (Charles B. McHenry) > William Thomas McHenry (Louisa Francis Wakefield) > my mother (b. 1915 TX). I hope other descendents of Dr. John Walton, Sr. ( s/o Edward, Jr.> Edward, Sr.>John, b. bef 1630 VA) will add their line with full name, dates, and locations. Also, if you have additional information about his ancestry, please add you data.