Every American President up to and including Obama, except for Van Buren (all Dutch), was descended from King John of England. Trump probably is too, and Hillary, and Ted Cruz, maybe not Rubio. Them old timey people have TONS of ancestors.
Going even back further, I’m personally descended from Charlemagne, along with, according to sources, nearly everyone on Earth with any European blood.
Is your new screenname gonna be Impemagne ?