I have seen other messages about these people, but possibly this will help someone.I am not researching this family, just had ancestors who lived in the same area.From the "Historical Atlas of Westmoreland County, Virginia" by David Eaton, 1942:
"Thomas Pannell was of English descent and settled in Rappahannock County and changed the spelling of his name to Pannill.General J.E.B. Stuart descended from this family.Thomas Pannill - name changed again to Pannell - made his will May 11, 1676, and probated August 1677, divided his estate between his wife, Katharine, and his children, William, Mary and Isabella and a child unborn.When William bacame of age he sold part of his property.He married Frances Sterne, a daughter of David Sterne, who lived nearby."
On another page in a paragraph on Col. John Stone, who settled in Leedstown. "(He) had a son, Francis, who married Mrs. Mary Kay, widow of James Kay, of Richmond County, and daughter of Thomas Pannell."