http://www.burkes-american-presidents.com/sites/america/sitepages/page70.asp "36 of the 42 Presidential families can be traced back to England, Scotland, Ireland or Wales. Many President's families are linked to those of British Peers or Baronets" and so have essentially french noble bloodlines since english monarchs are descendant of Charlemagne since William the Conqueror invade England ! If you don't know who was William http://www3.dcs.hull.ac.uk/cgi-bin/gedlkup/n=royal?royal01380 William I the Conqueror, King of England Born: 1028, Falaise,Normandy,France Acceded: 25 DEC 1066, Westminster Abbey, London, England Died: 9 SEP 1087, Hermentrube, Near Rouen, France Interred: St Stephen Abbey,Caen,Normandy Notes: Reigned 1066-1087. Duke of Normandy 1035-1087. Invaded England defeated and killed his rival Harold at the Battle of Hastings and became King. The Norman conquest of England was completed by 1072 aided by the establishment of feaudalism under which his followers were granted land in return for pledges of service and loyalty. As King William was noted for his efficient if harsh rule. His administration relied upon Norman and other foreign personnell especially Lanfranc Archbishop of Canterbury.