Patrick Bouvier Kennedy ( August 7 , 1963 – August 9 , 1963 ) was the infant child of United States President John F. Kennedy and First Lady Jacqueline Kennedy . He was the younger brother of Caroline and John Jr. ; another daughter was stillborn . Born prematurely , Kennedy lived just over 39 hours before desperate attempts to save him failed , putting the First Family and nation into mourning . Three months later , his death was eclipsed by his father 's assassination , but the Kennedy infant 's death brought hyaline membrane disease ( HMD ) into the public consciousness and inspired further research
his father 's assassination
Assassination of John F. Kennedy
Patrick Bouvier Kennedy