Background
Kanamaru was born into a family of peasant farmers on Izena Island, a tiny island which lies off the northwestern coast of Okinawa Island.
尚圓
Kanamaru was born into a family of peasant farmers on Izena Island, a tiny island which lies off the northwestern coast of Okinawa Island.
Prior to becoming king, he was known as Kanamaru (金丸). In one year in which the island had suffered from a particularly severe drought, the rice patties of Kanamaru"s family were found to be full of water. Accused of having stolen the water, Kanamaru was forced to flee his home, and ended up in Ginama, in the northern region (Kunigami) of Okinawa Island.
After several years living in Ginama, there too some type of dispute or disagreement between Kanamaru and his neighbors emerged.
Leaving Ginama, he traveled to Shuri, the capital of the Ryūkyū Kingdom, in 1441, and became a servant or retainer to the prince, Shō Taikyū. After Shō Taikyū became king in 1454, Kanamaru was made royal treasurer, and was in 1459 granted the post of Omonogusuku osasu no soba (御物城御鎖側), a position involving responsibility for matters regarding foreign relations and trade.
He was also granted territory, and made Lord of Uchima (内間御殿, Uchima-udun). There emerged a difference of opinion between Kanamaru, and Shō Toku, who succeeded Shō Taikyū as king in 1461, possibly over the king"s costly military efforts on the island of Kikaigashima, leading Kanamaru to leave Shuri and retire to Uchima.
Shō Toku died shortly afterwards, however, and it is said that in the ensuing discussions among the elder bureaucrats to choose a successor, Kanamaru was selected by popular demand, and thus came to the throne, taking the royal name Shō En.
Historian George H. Kerr, however, points out that official histories produced in the following centuries were written with the patronage of Shō En"s successors. Also that the circumstances surrounding Shō Toku"s death remain something of a mystery, and the traditional account may simply indicate that there was a shift in allegiances among the aristocrats and bureaucrats towards Kanamaru, or that those parties in support of Kanamaru simply outnumbered those on the side of the late king. Shō En thus established the Second Shō Dynasty, taking on the honorary surname granted the kings of Ryūkyū by Ming Dynasty (and later, Qing Dynasty) China.
His father came to be honored as King of Izena, and a formal tomb was constructed for Shō En"s parents on Izena Island.
His reign marked the beginning of an institutional shift in the royal government, away from rule by a charismatic or otherwise gifted individual leader, id est (that is) the king, and towards a more bureaucratic system, with the king at its center. Shō En"s childhood wife is believed to have died, or otherwise separated from Kanamaru, before he rose to prominence at Shuri.
He also banned members of the former Shō lineage from high government office, and from marrying into the lineage of the new dynasty, and took steps to elevate the prestige of his own family.