JFK
John Kennedy
John Fitzgerald Kennedy
Jack Kennedy
Jack
Lieutenant Kennedy
"Crash" Kennedy
"Shaft"
Congressman Kennedy
Senator Kennedy
President Kennedy
JFK, Sr.
He sometimes referred to as JFK. His full name is John Fitzgerald Kennedy.
Camelot
Formally he's referred to as John F. Kennedy or sometimes John Kennedy; his friends and family called him Jack, so he was known to some as Jack Kennedy. But he is only very rarely referred to as Jack F. Kennedy. The most common names are President Kennedy, John F. Kennedy and JFK.
John Kennedy is the one associated with Camelot.
He is often referred to as President Kennedy or JFK.
Jack
John Kennedy
Jack
John F Kennedy
JF Kennedy's administration was often referred to as Camelot.
John F. Kennedy was nicknamed Jack. If John Tyler, John Adams, or John Quincy Adams was called Jack, it's not obvious.
Every president's family is the first family.