Where does “Alcibiades” come from?

Alcibiades (Latin) comes from Ancient Greek Ἀλκιβιάδης, from Ancient Greek ἀλκή, from Proto-Indo-European h₂lek- — to protect.

Ancestry of “Alcibiades”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἀλκιβιάδης	—
2	Ancient Greek	ἀλκή	prowess, force; defense, guard; battle, fight
3	Proto-Indo-European	h₂lek-	to protect

Alcibiades — Etymology, Origin & Word History | Etymology Explorer