Poe was legally adopted by the actors Fernando Poe, Jr. and Susan Roces and she was named Mary Grace Natividad Sonora Poe by them. While still young, she watched her father from the sets of his movies—even playing minor roles in some of them, such as the daughter of Paquito Diaz's character in Durugin si Totoy Bato, and as a street child in Dugo ng Bayan. Ultimately, Poe did not enter show business.
