Divorced and without children, citizen Yi Gu was found in a guest room at the Akasaka Prince Hotel in Tokyo, the time (Saturday) and cause (heart attack) of his death at present only estimates. On Tuesday morning, Japanese prosecutors performed an autopsy. But Gu (b. 1931) was Korea’s last imperial prince, the son of Crown Prince Eun (1887-1970) and Princess Bang-ja (1901-1989) and the final heir to the Chosun Dynasty's imperial mantle. His life’s ups and downs closely followed the fortunes of modern Korean history. At his birth in Tokyo, his father was king in name only of a country...