Here is the definitive timeline for the three movies,


18??
Antonio Andolini is born in Sicily.
Antonio's future wife is born in Sicily.
1887
Paolo Andolini is born to Antonio and his wife in Sicily.
1891
Vito Andolini is born to Antonio and his wife in Sicily.[nb 1]
Hyman Roth is born.
1897
Carmela Corleone is born.
1900
Don Altobello is born.
1901
Antonio is killed on the orders of Don Francesco Ciccio.
Paolo is gunned down during Antonio's funeral.
Antonio's wife is shot to death while attempting to avenge Antonio and Paolo's murder.
Vito immigrates to the United States.
1910
Johnny Fontane is born.
Tom Hagen is born.
1914
Vito and Carmela marry.
1916
Sonny is born to Vito and Carmela.
1918
Sandra is born.
1919
Fredo is born to Vito and Carmela.
1920
Prohibition begins.
Theresa Hagen is born.
Michael Corleone is born to Vito and Carmela.
Vito murders Massimo Fanucci.
1923
Connie is born to Vito and Carmela.[nb 2]
Vito returns to Sicily to avenge his family's murder and kills Don Ciccio.
1924
Kay Adams is born to a Baptist pastor and his wife in New Hampshire.
1933
Prohibition ends.
The Olive Oil War between Salvatore Maranzano and Vito Corleone begins.
Maranzano is killed on Vito's orders by Salvatore Tessio and his men.[nb 3]
1934
Vito survives an assassination attempt by Irish hoodlums.
Giuseppe Mariposa is killed by Salvatore Tessio on the orders of Vito.[nb 3]
Vito begins the Pacification of New York.
1935
Sonny and Sandra marry.
1937
Francesca and Kathryn are born to Sonny and Sandra Corleone.
Johnny is released from a personal services contract by his bandleader, Les Halley.
1939
Vito and his family moves to a compound in Long Beach.
World War II begins.
1940
Frank is born to Tom and Theresa Hagen.
Frank is born to Sonny and Sandra Corleone.
1941
Japan attack the United States at Pearl Harbor.
Michael enlists in the United States Marine Corps.
1942
Andrew is born to Tom and Theresa Hagen.
1944
Michael is awarded the Navy Cross and is pictured in Life Magazine.
1945
Santino, Jr. is born to Sonny and Sandra.
Kay commences an affair with Michael.
World War II ends.
Carlo and Connie marry.
Tom becomes Vito's consigliere after Genco dies.
Vito is severely wounded in an assassination attempt by Virgil Sollozzo and the Tattaglia family.
Sonny takes charge of family affairs.
1946
Michael murders Sollozzo and Mark McCluskey and flees to Sicily.
The Five Families War begins.
1947
Michael and Apollonia marry.
1948
Sonny is brutally massacred by enemies of the family.[nb 4]
Apollonia is killed in a car-bomb explosion due to the treachery of Fabrizio.
Vincent is born to Sonny and Lucy.
Michael returns to New York from Sicily.
1949
Victor is born to Carlo and Connie.
1950
Michael reunites with Kay.
1951
Michael and Kay marry.
Anthony is born to Michael and Kay.
1953
Mary is born to Michael and Kay.
1954
Michael assumes control of family business interests, with the blessing of Vito.
1955
Michael Francis is born to Carlo and Connie.
Vito dies of natural causes.
Michael becomes Don.
Michael eliminates most of his mobster foes and moves from Long Beach to Lake Tahoe, Nevada.[nb 5]
Carlo is garroted by Peter Clemenza on Michael's orders.
1957
Fredo and Deanna Dunn marry.
1958
Peter Clemenza dies.
Connie seeks Michael's permission to marry Merle Johnson.
Michael survives an assassination attempt at his Lake Tahoe mansion, orchestrated by Hyman Roth.
Michael does business in Cuba.
1959
Michael is summoned to appear before a subcommittee of the Senate.
Kay separates from Michael.
Al Neri kills Fredo at Lake Tahoe at the behest of Michael.
1960
Hyman Roth is killed by Rocco Lampone.[nb 6]
1976
Michael moves back to New York.
1979
Michael receives the Order of St. Sebastian.
Vincent enters the Corleone family circle.
Vincent saves Michael from an assassination attempt in Atlantic City, orchestrated by Joey Zasa and Don Altobello.
Joey Zasa is killed by Vincent.
1980
Vincent becomes Michael's heir.
Anthony has his opera debut at Teatro Massimo in Palermo, Sicily.
Connie poisons Don Altobello.
Mary is murdered as she leaves the opera house with Michael.
1997
Michael dies.