I'm not sure how I personally feel about it, for a few different reasons. I'm not familiar with the novels (though I'll look them up later), but I am quite familiar with the president. I'm not sure how I feel about
Lincoln, therefore I'm not sure about the name. (I see
Lincoln in the same light as
Kennedy,
Washington, and
Jefferson - presidents who are thought to be far better men than they really were)
It's cute though, and setting politics aside, I'd say use it. As for the inspirtation: I wouldn't worry about it. Names have been inspired by alcohol and cars, I think books aren't at all bad. (Plus, I plan on using
Peter from a series of books, and my brother named all three of his kids after various characters in books.)