2. I totally agree about Benjamin Harrison and almost included him. I think he is more obscure than Millard Fillmore and probably at the same level of obscurity as Rutherford B. Hayes. The reason I left Little Ben out is because he might be a bit easier to recognize because of his famous family name. His father was a Congressman, his grandfather was the famous General, territorial Governor, Congressman, Senator, and 9th President, and his great-grandfather was a member of the Continental Congress, signed the Declaration of Independence, and was Governor of Virginia. With that said, Benjamin Harrison is one of the most difficult Presidents to find detailed, in-depth biographies about.