In her autobiographical novel, Brown Girl, Brownstones Marshall depicts the impact of the peculiar history of the Caribbean people of African descents in New York. As a daughter of an immigrant family of Barbados to Brooklyn, Selina confronts the two great wings of the black diaspora, the Afro-American and West Indian cultures. This gives her an unique angle from which she really see as one culture. This study explores how Selina pursues her self-identity from three perspectives: multicultures, the allegory of history and the black women's sense of self-identity. Selina's life is influenced by the tragic opposition between her parents' battles : Deighton's yearning for deep historical meanings and Silla's obsession with the success ethic. Selina formulates her inquiry into identity against the narrowness and materialism of the Bajan Association as the organized form of Silla's values, by breaking off her affair with Clive and by experiencing racism. Selina's inter-American and diasporic perspective grows in large part from the marginal women in Brooklyn: Rachael, Suggie and Miss Tompson. She comes to a full awareness of her self-identity when she can admit that she resembles her mother. To Selina Silla's voice functions as the allegory of its historical experiences because her voice echoes the past, that is, its cultural, political and socio-economic complexities inherited from the colonial structure in Barbados. And finally Selina's journey to Barbodos shows that a spiritual return to her source represents the best chance to get a sense of self. Thus Marshall attempts to communicate the world to the larger world around her, emphasizing the necessity of cultural continuity for Blacks of the African Diaspora. Her rare vision gives the black community a more truthful and complex sense of who they are in all their diversity.