Possibly from Latin avulus meaning “little grandfather”, though it could be from the Etruscan name Aule, which was possibly derived from avils meaning “years”. This was a Roman praenomen, or given name. Folk etymology connects it to Latin aula meaning “palace”.
People with the name Faunus have a deep inner need for quiet, and a desire to understand and analyze the world they live in, and to learn the deeper truths.