Orestes derived from Greek ορεστιας (orestias) meaning "of the mountains". In Greek myth he was the son of Agamemnon and Clytemnestra. He killed his mother and her lover Aegisthus after they killed his father.
Saintly namesake: Saint Orestes of Tyana was a 4th-century Christian martyr. He is honored for his courage and faith during the persecutions of early Christianity. (November 10 · 4th century)
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