The GukanshÅ ruled from the palace of Akitsushima-no-miya at Muro in what will come to be known as Yamato province . Jien records that KÅ an was the second son of Emperor KÅ shÅ , and that he ruled from the palace of Akitsushima-no-miya at Muro in what will come to be known as Yamato province .