supreme god of the ancient Greeks and master of the others, 1706, from Greek, from PIE *dewos- "god" (source also of Latin deus "god," Old Persian daiva- "demon, evil god," Old Church Slavonic deivai, Sanskrit deva-), from root *dyeu- "to shine," in derivatives "sky, heaven, god." The god-sense is originally "shining," but "whether as originally sun-god or as lightener" is not now clear.
famous sorceress, daughter of the king of Colchis, from Latin Medea, from Greek Mēdeia, literally "cunning," related to mēdomai "to deliberate, estimate, contrive, decide," mēdein "to protect, rule over," from PIE root *med- "take appropriate measures."
<a href="https://www.etymonline.com/word/Diomedes">Etymology of Diomedes by etymonline</a>
Harper, D. (n.d.). Etymology of Diomedes. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/Diomedes