Where does “Naupacte” come from?

Naupacte (French) comes from Latin Naupactus, from Ancient Greek Ναύπακτος, from Ancient Greek ναῦς, from Proto-Indo-European néh₂us, from Proto-Indo-European (s)neh₂- — to swim; to float.

Ancestry of “Naupacte”, step by step

Step	Language	Word	Meaning
1	Latin	Naupactus	also called Lepanto
2	Ancient Greek	Ναύπακτος	Naupactus
3	Ancient Greek	ναῦς	a ship
4	Proto-Indo-European	néh₂us	boat
5	Proto-Indo-European	(s)neh₂-	to swim; to float

Every word from Proto-Indo-European (s)neh₂- →Every word from Proto-Indo-European néh₂us →Every word from Ancient Greek ναῦς →