2021 saw Andra Day earn her first Oscar nomination (for Best Actress). What other person, 49 years earlier, earned her first (and only) acting Oscar nomination (for Best Actress) for playing the same role as Ms. Day? This marks only the third time an actress has been nominated for the same character that had earned another actress a previous nomination (Name the actress, not the character).
Diana Ross (Billie Holiday in "Lady Sings the Blues")