Trick question, he doesn't have one.
Double trick question! You didn't specify which president.
This answer has more twits than a Night M. Shamylan movie.
John Adams and his son John Quincy Adams were US presidents from Mass.
The last name of the father and son presidents is Bush.
you
John Quincy Adams and George W Bush
2 Father son combos, The Bushs and The Adams
The only member of a father and son combination to be elected twice was the son, George W. Bush. The father, George H.W. Bush as well as both Adamses were one-term presidents.
George W Bush
Dwight D. Eisenhower
John Adams and John Quincy Adams were the first father-son Presidents elected into office.
George Washinton
John Quincy Adams, son of John Adams and George W. Bush, son of George H.W. Bush
Adams Bushes