Abigail Adams was the wife and closest advisor of John Adams, the second president of the United States, and the mother of John Quincy Adams, the sixth president of the United States. She is widely considered to be an influential figure in the founding of the United States, and was both the first second lady and second first lady of the United States, although such titles were not used at the time. She and Barbara Bush are the only two women in American history who were both married to a U.S. president and the mother of a U.S. president.