Where does “Stépanoff” come from?

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

Ancestry of “Stépanoff”, step by step

Step	Language	Word	Meaning
1	Russian	Степа́нов	Stepan's, Stephen's
2	Russian	Степа́н	—
3	Ancient Greek	Στέφανος	In particular: Stephen, an early Christian martyr
4	Ancient Greek	στέφω	I put around; I encircle, crown, wreath, garland
5	Proto-Hellenic	stékʷʰō	to enlace, crown, encircle
6	Proto-Indo-European	stegʷʰ-	to enlace

Every word from Proto-Indo-European stegʷʰ- →Every word from Proto-Hellenic stékʷʰō →Every word from Ancient Greek στέφω →