JFK Jr. 'Was the Only One' Who Understood Caroline Kennedy's Losses — and Her Daughter's Death 'May Be the Hardest' (Exclusive)

“Caroline suffered the same losses that John suffered, except that she also suffered the loss of her brother," presidential historian Steven M. Gillon tells PEOPLE ...

Inside Caroline Kennedy and JFK Jr.’s childhood homes — as experts lift the lid on the siblings’ incredible bond

Caroline and JFK Jr. had far more in common than their family’s heartbreaks, having been raised in extraordinary ...