 PLOT: When Michael is being questioned in the Senate, he is asked  about the killing of the heads of the Five Families in 1950.  According to the timeline of the first movie, Michael returned to  the States in 1948, married Kay in 1949 and his son Anthony was born  in 1950. Vito (according to his headstone) died in 1954. Based on  this and the cars shown in the first movie (Neri was jumped in a  1953 Chevy after shooting Barzini), the killings occurred either in  late 1954 or early 1955. Also Anthony was around four years