Where does “Mitrídates” come from?

Mitrídates (Spanish) comes from Latin Mithridātēs, from Ancient Greek Μιθριδάτης, from Old Persian *Miθradātah.

Ancestry of “Mitrídates”, step by step

Step	Language	Word	Meaning
1	Latin	Mithridātēs	—
2	Ancient Greek	Μιθριδάτης	—
3	Old Persian	*Miθradātah	—