Who is Rosa/Rosario Castellanos Castellanos from The Surrender Tree: Poems of Cuba's Struggle for Freedom and what is their importance?

Rosa, le Bayamesa, is an actual historical figure. She was born between 1834 and 1840, and she went onto create hospitals during Cuba's wars for independence. Rosa is the main subject in Engle's, The Surrender Tree: Poems of Cuba's Struggle for Freedom.