Answer
In "The Age of Innocence," Grant portrays the character of Larry Lefferts, a member of New York's high society during the late 19th century. Lefferts serves as a close friend and confidant to Newland Archer, the story's protagonist. Throughout the film, Lefferts offers advice and support to Archer as he navigates the complexities of societal expectations and personal desires within the constraints of the era's strict social conventions.