Mithridates

Greek form of the Old Persian name Mithradatha meaning "gift of MITHRA". This was the name (in Greek) of several Parthian kings.

MITHRA   male   Persian Mythology
Derived from an Indo-Iranian root *mitra meaning "oath, alliance, friend". In Persian mythology he was a god of light and friendship, the son of the supreme god Ahura Mazda. Worship of him eventually spread outside of Persia, where it was known as Mithraism.
EQUIVALENTS
ANCIENT PERSIAN: Mithradatha
PERSIAN: Mehrdad
OTHER FORMS
PERSIAN MYTHOLOGY: Mithra