[3] Wezo no ikusamoi (good commander of Iso), who appears in the archaic poem collection Omoro Sōshi, is usually identified as Eiso.

The Chūzan Seifu is more explicit about the miraculous birth and is characterized by a cliché: She dreamed of the sun, from which pregnancy followed.

[5] Eiso instituted a variety of tax and land reforms, and Okinawa recovered from famines and other problems which plagued the previous reign.

Some northwestern islands, which Sai On's edition of the Chūzan Seifu (1725) identified as Kumejima, Kerama, and Iheya, paid tribute to the king for the first time in 1264.

[6] Sai On's edition of the Chūzan Seifu (1725) claims that during the reign of Eiso, the Yuan dynasty tried to subjugate Ryukyu twice in 1292 and 1297.

In 1292, the Yuan imperial court of Kublai Khan sent envoys demanding for Ryukyu to become a vassal of the empire.

Modern scholars generally consider that the Liuqiu (瑠求) in the Chinese sources referred to Taiwan, not Okinawa Island.