There appear to be many errors or possible errors in the dates given in the "Family Tree" on the bonus disk. Apollonia didn't die in '47, nor did Sonny die in '48. Vito and Carlo didn't die in '55. Santino Jr. wasn't born in '45. Victor Rizzi wasn't born in '49. Mary probably wasn't born in '53. Francesca and her twin probably weren't born in '37. Paolo Andolini probably wasn't born in 1887. And Hagen probably wasn't six years older than Sonny. It's unfortunate because the "tree" is likely to be regarded as definitive.