1) Mythological Greek character 
In Greek mythology, OrseisPronunciation-needed, (Greek: Ὀρσηίς) was the water-nymph (Naiad) of a spring in Thessalia, Greece, and the mythical ancestor of the Greeks. It is uncertain whether she was believed to be the daughter of Oceanus or the river-god of Thessalia, Peneios. There is even a possibility that she was the daughter of Zeus an...