Silvio is the Italian, Spanish and Portuguese form of the Latin Silvius, which comes from silva and means "of the forest" or "woodland". In Roman legend Silvius was the son of Aeneas and the ancestor of the kings of Alba Longa, and Rhea Silvia was the mother of Romulus and Remus. Silvio ranked 3287 among US boys in 2000 and has edged up to number 2830 in 2025, its best rank to date.