As SC said, Fredo was born into it. And Puzo describes Fredo at the beginning of the novel as loyal, dutiful, "a great help to his father...though he was not expected to succeed him" (or something to that effect).
Ntra la porta tua lu sangu � sparsu, E nun me mporta si ce muoru accisu... E s'iddu muoru e vaju mparadisu Si nun ce truovo a ttia, mancu ce trasu.
