From a very young age , Kennedy was groomed by his father and predicted to be the first Roman Catholic president of the United States . When he was born , his grandfather John F. Fitzgerald , then Mayor of Boston , told the news , " This child is the future president of the nation . " He often boasted that he would be president even without help from his father . He was a delegate to the Democratic National Convention in 1940 . Kennedy planned to run for the U.S. House from Massachusetts 's 11th congressional district in 1946
Democratic National Convention
1940 Democratic National Convention
Joseph P. Kennedy Jr.