Where does “Στέφανος” come from?

Στέφανος (Ancient Greek) comes from Ancient Greek στέφω, from Proto-Hellenic stékʷʰō, from Proto-Indo-European stegʷʰ- — to enlace.

Ancestry of “Στέφανος”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	στέφω	I put around; I encircle, crown, wreath, garland
2	Proto-Hellenic	stékʷʰō	—
3	Proto-Indo-European	stegʷʰ-	to enlace

Στέφανος — Etymology, Origin & Word History | Etymology Explorer