She arrives in Boston as a slave, but by the time she turns twenty, she is a world-famous poet.
Phillis Wheatley is a rare example of an enslaved Bostonian who had the chance to make her voice heard through her poems. The family who claimed ownership of her encouraged and even helped her to publish her poems but the poems themselves contained subtle criticisms of slavery. The poems were published in London where she gained enough popularity that people began to pressure the Wheatley family to free her from slavery.
For more on Phillis Wheatley, try:
Phillis Wheatly from The Poetry Foundation- This page has a nice biography of Phillis Wheatley and features selections of her poetry.