John F. Kennedy, the 35th President of the United States, was not a direct blood descendant of Charlemagne. All eight of JFK’s great-grandparents were Irish immigrants, and his family tree is rooted in Irish Catholic ancestry, with no documented royal or continental European lineage that would connect him directly to Charlemagne.
However, there is a connection between the Kennedy family and Charlemagne through marriage, not by blood. John F. Kennedy’s sister, Kathleen Kennedy, married William Cavendish, Marquess of Hartington, who was heir to the Dukedom of Devonshire. William Cavendish was a royal descendant whose ancestors included King James II of Scotland, Alfred the Great, and Charlemagne. Therefore, while JFK himself was not a descendant of Charlemagne, his family became linked to Charlemagne’s lineage through his sister’s marriage into European nobility.
In summary, John F. Kennedy’s relationship to Charlemagne is by marriage through his sister Kathleen’s union with William Cavendish, not through his own ancestry.