In Greek mythology, Euphrosyne was one of the Three Charites or Three Graces. She was also mentioned as Euthymia. Her sisters were Thalia and Aglaea.
She and her sisters were daughters of Zeus and the Oceanid Eurynome. Their task in the world was to fill it with joy and pleasant times. They were often the companions of the goddess Aphrodite and Eros, dancing together with the Nymphs and the Muses. Euphrosyne, specifically, was the personification of beauty and grace.
See Also: Charites, Thalia, Aglaea, Zeus, Eurynome, Aphrodite, Eros, Muses