Jack Ruby is involved in the JFK assassination because he killed Lee Harvey Oswald, the man who killed JFK, while Lee Harvey Oswald was walking to his trial. Now, nobody knows why Lee Harvey Oswald killed JFK because Ruby assassinated him before he could talk about the case.
yes Jack was John's nickname
JFK John Kennedy John F. Kennedy John Fitzgerald Kennedy Jack Kennedy Jack Lieutenant Kennedy "Crash" Kennedy "Shaft" Congressman Kennedy Senator Kennedy President Kennedy JFK, Sr.
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 F. Kennedy was nicknamed Jack. If John Tyler, John Adams, or John Quincy Adams was called Jack, it's not obvious.
No, it was John. Jack is a somewhat common nickname for John.
Camelot
'Jack' is a common nickname for someone whose name is 'John.'
John Fitzgerald Kennedy (official name) was called Jack Kennedy (nickname) by his family and friends. Jack is a common nickname for John.
JFK REAL name is john Fitzgerald Kennedy, he was the youngest president ever at the time that he held office and was also the third president to die in office. he was preceded in death by his wife and two kids. he was killed in dallas texas.
John Fitzgerald "Jack" Kennedy
His full name was John Fitzgerald Kennedy.
John F. Kennedy was often called "Jack"/