Etruscan language
His name was imported from Greek Charon, although it is uncertain whether Etruscans had a native name for a god of the underworld before this. As suggested by alternations in the Etruscan language such as "θu" "one" changing to "θunśna" "first", "lev" "lion" (from Greek leōn) and "Apulu" (from Greek "Apóllōn"), words ending in "-n" after "u" were disappearing from the language which is why we see his name spelled "Xarun" and later "Xaru".