The president born after the greatest number of his successors is John F. Kennedy. He was born after four of his successors: Lyndon B. Johnson (); Ronald Reagan (); Richard Nixon (); and Gerald Ford (). On the other extreme, Ronald Reagan and Joe Biden were each born before four of their predecessors. Reagan was born before Richard Nixon (), Gerald Ford (), John F. Kennedy (), and Jimmy Carter (). Biden was born before Donald Trump (); George W. Bush (); Bill Clinton (); and Barack Obama ().