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Most Oscars awarded for portrayal of same character

Most Oscars awarded for portrayal of same character
Who
Marlon Brando, Robert de Niro
Where
United States
When
01 January 0001
Marlon Brando won (but declined) the Best Actor award for his role as Vito Corleone in The Godfather (USA, 1972) and Robert De Niro won a Best Supporting Actor award for his performance as the younger Corleone in The Godfather Part II (USA, 1974).