Lý Long Tường
Lý Long Tường (1174 – ?) was a Vietnamese prince of the Lý dynasty of Đại Việt (in modern-day Vietnam) who went to Korea and became a general. In Korea he went by the name Yi Yong-sang (Korean: 이용상; Hanja: 李龍祥). He is the progenitor of a still-extant Korean clan: the Hwasan Lee clan.
He was born in 1174, the seventh son of Emperor Lý Anh Tông (who reigned from 1138 to 1175) and his consort Lê Mỹ Nga. He was appointed the Great National Tutor.