What does Mía mean?
Primarily a short, affectionate form of María (ultimately from the Hebrew Miriam, meaning uncertain). Its popularity in the Hispanic world is reinforced by coincidence with the Spanish possessive mía 'mine' (also the Italian word 'mine'), though that resemblance is not the name's actual origin.
What does Savannah mean?
Savannah takes its name from the open grassy plain, via the Spanish sabana.