Where does “sió” come from?

sió (Hungarian) comes from Latin Sion, from Koine Greek Σῑών, from Hebrew צִיּוֹן — Zion.

Ancestry of “sió”, step by step

Step	Language	Word	Meaning
1	Latin	Sion	—
2	Koine Greek	Σῑών	—
3	Hebrew	צִיּוֹן	Zion

sió — Etymology, Origin & Word History | Etymology Explorer