Who is Julia from Caesar's Women and what is their importance?

Julia is Caesar's beautiful and charming daughter. Her mother is Cinnilla, Caesar's first wife. According to Aurelia, Julia gets her gentleness and compassion from her mother's side. At the age of eight, she is engaged to Brutus. Julia pities Brutus, but doesn't love him. She does, however, love her father dearly and always remains cheerful and kind in public.