It's been an "impossible year" for the family of Maeve Kennedy Townsend McKean and her young son Gideon, who drowned exactly one year ago after being swept away in a canoe in the choppy expanse of the Chesapeake Bay.

But as the loved ones of Robert F. Kennedy's granddaughter and great-grandson mark the first anniversary since the deaths, they are also thinking about Maeve and Gideon's legacies: what it meant to know and love them and how that love can spread now to others.