Like the MUSES, they inspire artistic creativity. The daughters of ZEUS and EURYNOME (and/or HERA or APHRODITE and DIONYSUS depending on who you ask), their names are AGLAIA, the Radiant, EUPHROSYNE(2), the Joyful, and THALIA, the Flowering.
GodNote: Sorry this Graces article is a bit short. We have sent our Data Dwarves off to find more nuggets of information. Updates coming soon.