Where does “Osiris” come from?

Osiris (German) comes from Latin Osīris, from Ancient Greek Ὄσιρις, from Egyptian wsjr — Osiris.

Ancestry of “Osiris”, step by step

Step	Language	Word	Meaning
1	Latin	Osīris	—
2	Ancient Greek	Ὄσιρις	—
3	Egyptian	wsjr	Osiris

Osiris — Etymology, Origin & Word History | Etymology Explorer