Chungnyeol of Goryeo
Chungnyeol (3 April 1236 – 30 July 1308), personal name Wang Geo, was the 25th king of Goryeo, son of Wonjong, enthroned in 1274. As crown prince he married a daughter of Kublai Khan, Princess Jeguk, opening eighty years of Mongol alliances as the first Goryeo ruler titled only wang.
Goryeo supplied fleets for Kublai's failed Japan invasions of 1274 and 1281 at great cost. Chungnyeol recovered Dongnyeong and Tamna, secured Yuan garrison withdrawal, restored a body investigating nobles' illegal holdings, and promoted Confucian learning. He abdicated to his son Chungseon in 1298, was restored within the year, and died in 1308.