Eiso

The Eiso dynasty was the ruling house of Chūzan in central Okinawa, named after its semi-legendary founder Eiso, said to have reigned from 1260 to 1299 from Urasoe. Later Ryukyu histories credit him with restoring prosperity to a famine-stricken island, building Okinawa's first Buddhist temple at Gokuraku-ji and rejecting the suzerainty of the Yuan.

Under his great-grandson Tamagusuku, who succeeded in 1314, the territorial lords defected: the lord of Nakijin founded Hokuzan in the north and the aji of Ōzato founded Nanzan in the south, leaving Tamagusuku only Chūzan.

His son Seii came to the throne as a child in 1337, and the misrule of his mother's regency cost the house its support; when Seii died in 1349 the anji set his heir aside and raised the Urasoe lord Satto to the throne, ending the Eiso line.