Tatiana Schlossberg - journalist, author, daughter of Caroline Kennedy and granddaughter of President John F. Kennedy and his wife Jacqueline Kennedy Onassis - has passed away at just 35 years old according to her family in a social media post on Tuesday. So sad... The loss is being felt not just inside one of America's most storied families, but across the worlds of journalism, politics, and public service where she quietly made her mark. Tatiana wasn't a celebrity in the flashy sense.