Euphrosyne

Goddess of good cheer, joy, and mirth. One of the Three Graces, also known as the Lady of Joy and the Mirthful Maiden. Daughter of Erebus, the primordial god of shadows, and Nyxe, a goddess of night, and sister to Algaea, Thalia, and Ilmater. Thought to have been a deity brought over to Polnarus from Sothys.