Another Republican president, George H.W. Bush, named three White House chiefs of staff during his one term in office: John Sununu in 1989-91, Samuel Skinner in 1991-92 and James Baker in 1992-93.

Wiles, 67, the mild-mannered grandmother who has helped organize Trump's often raucous and controversial campaign into a disciplined and powerful machine behind the scenes, will now be one of the most powerful people in the Executive Office.