Where does “Themistius” come from?

Themistius (English) comes from Latin Themistius, from Ancient Greek Θεμίστιος, from Ancient Greek θεμῐστός — oracular.

Ancestry of “Themistius”, step by step

Step	Language	Word	Meaning
1	Latin	Themistius	—
2	Ancient Greek	Θεμίστιος	—
3	Ancient Greek	θεμῐστός	oracular

Themistius — Etymology, Origin & Word History | Etymology Explorer