Lincoln did speculate about his origins. But he suspected that his mother might have been an offshoot of one of the First Families of Virginia. Curiously, he apparently did not know that his ancestors had been locally prominent, successful farmers in Massachusetts, New Jersey, and Virginia before moving westward and returning to nature as frontiersmen.
And interestingly, one of the big promoters of the Enlow theory today is an Enlow descendant. Disprove the theory and it gets attached to another Enlow, Inlow or Enlows.
What about the Enlows', Inlows', Enlows's outlaw in-laws?