Where does “Caronte” come from?

Caronte (Portuguese) comes from Ancient Greek Χάρων, from Ancient Greek χᾰ́ρων.

Ancestry of “Caronte”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Χάρων	Charon, the ferryman of Hades; Charon, ferryman...
2	Ancient Greek	χᾰ́ρων	—

Caronte — Etymology, Origin & Word History | Etymology Explorer