The Tethys Ocean /ˈtiːθɪs, ˈtɛθɪs/ (Greek: Τηθύς Tēthús), also called the Tethys Sea or the Neotethys, was an ocean during much of the Mesozoic Era located between the ancient continents of Gondwana and Laurasia, before the opening of the Indian and Atlantic oceans during the Cretaceous Period.
This the name of the only dancer available in Fire Emblem: The Sacred Stones. Funny enough, in a support conversation with Artur, he says she reminds him of his grandmother.