In later generations, Robert's son David died of a drug overdose in 1984; and son Michael died from injuries sustained in a skiing accident in 1997; John's son John Jr. died in a plane crash (along with his wife Carolyn and sister-in-law Lauren) off the coast of Martha's Vineyard in 1999; Kara Kennedy and Christopher Kennedy Lawford died of heart attacks, in 2011 and 2018 respectively; and Saoirse Kennedy Hill died of a drug overdose in 2019.