The term "accidental president" has been applied to several presidents. Although Gerald Ford was referred to as the "accidental president" (he was the only man in history to serve as president and...
A President is called a President because the basic word "president" means the head of state of Republic, head of a company of government office.
A Budget Approval
George Washington accepted this title. He did not want to be called "Your Highness" or anything that sounded like a king's title.
Andrew Jackson