Notes:

He was the third President of the United States of America. His ancestors also supposedly include Robert De Beaumont, another ancestor of ours. In "Thomas Jefferson - A Life" it states," From this point ( 19-16) on, the line we shall be following (one of a number of possible lines going back to Charlemagne (35-32) and beyond) is composed entirely of earls, counts, princes, and kings (and their daughters in some instances) except for Alan la louche's mother-in-law, Helen (20-17) daughter of Alan, Lord of Galloway (21-18) who signed the Magna Caita. The line follows the one in Burke's Presidential Families, Appendix C-3, which is the "Vere" line mentioned above, up to this point. Burke's however, mistakenly continues Helen's ancestry to King David I of Scotland through her mother, who was actually not Margaret but Alan's first wife, whose name is not known. Our line continues through Helen's husband, Roger de Quincy, Earl of Winchester and companio'1 of King Richard on the Third Crusade. Roger's mother was the daughter of Robert de Beaumont (22-19), Earl of Leicester (d. 1190), whose grandfather Robert, the first Earl of Leicester (24-21), married Isabel, granddaughter of King Henry I of France (26-23) and of Herbert IV, count of Vermandois (26-23), who was descended from Charlemagne (35-32) and King Henry I of Germany (31-28) as was pointed out earlier in this article."