Eiso

Eiso was a king of the Ryukyu Islands who ruled from 1260 to 1299 and founded the Eiso dynasty.

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Shunten: A Ryukyuan ruler traditionally dated to the late twelfth and early thirteenth centuries, often regarded as the first king of the Shunten dynasty. Shunten’s traditional reign preceded Eiso’s and provides an earlier point in accounts of Ryukyuan kingship.
Ryukyu Islands: An island chain extending southwest from Kyushu, Japan, toward Taiwan. These islands formed the territory associated with Eiso’s kingship.
Mongol invasions of Japan: Two attempted Mongol-led invasions of Japan in 1274 and 1281, repelled by Japanese defenses and storms. Ryukyuan tradition associates Eiso’s reign with Mongol envoys and the wider upheaval of the invasions.
Ryukyuan history: The history of the Ryukyu Islands and their societies, states, and relations with neighboring regions. Eiso’s reign sits within a period whose chronology remains difficult to reconstruct.
Eiso dynasty: A Ryukyuan royal dynasty associated with Eiso and rulers who succeeded him. Eiso founded the dynasty that bears his name.
Okinawa Island: The largest island in the Ryukyu chain and the historical center of Okinawan political power. Eiso’s kingship is chiefly situated in the political history of Okinawa.
Kublai Khan: The Mongol ruler who founded China's Yuan dynasty and launched invasions of Japan. Accounts of Eiso’s reign place Ryukyu in the orbit of Kublai’s demands for submission.
Ryukyuan creation myths: Traditional narratives explaining the origins of the Ryukyu Islands, their people, or their ruling lineages. Sacred narratives and dynastic tradition shape accounts of early Ryukyuan rulers.
Tamagusuku: A ruler of Okinawa traditionally placed after Eiso and before the beginning of the Sanzan period. His reign followed Eiso’s in traditional lists of Ryukyuan rulers.
Chuzan: A polity in central Okinawa that became one of the three kingdoms of the Sanzan period. Chuzan’s later prominence helps frame the changing political landscape after Eiso.