Where does “Васьк” come from?

Васьк (Akkala Sami) comes from Russian Вася, from Russian Васи́лий, from Ancient Greek βασίλειος, from Ancient Greek βασιλεύς, from Proto-Hellenic gʷatiléus — chief; king.

Ancestry of “Васьк”, step by step

Step	Language	Word	Meaning
1	Russian	Вася	—
2	Russian	Васи́лий	—
3	Ancient Greek	βασίλειος	of the king, kingly, royal
4	Ancient Greek	βασιλεύς	chief, master; king, lord, patron
5	Proto-Hellenic	gʷatiléus	chief; king

Every word from Proto-Hellenic gʷatiléus →Every word from Ancient Greek βασιλεύς →Every word from Ancient Greek βασίλειος →