The planet of Simocadia, situated within the Inner Rim, was governed by the Simocadia Royal family. At the time of the Clone Wars, Empress Sephani, the reigning monarch, aligned herself with the Republic. Conversely, her son, Prince Yojan, chose to side with the Separatists. In 22 BBY, Yojan met his end, giving his life to halt the Ardana Shadex that he had inadvertently released upon the Royal City.