Euphrosyne was one of the Charites. She was usually called Euthymia.
According to Greek myths, the Charites were daughters of Zeus and the Oceanid Eurynome. The Greek poet Pindar states that these goddesses were created to fill the world with pleasant moments and good will. Usually the Charites attended the goddess of beauty, Aphrodite, and her companion, Eros, and loved dancing around in a circle to Apollo's divine music, together with the nymphs and the Muses.