Zhao

The Hanyang Zhao took their clan seat at Hanyang, which Goryeo knew as Namgyeong. Their founder Jo Ji-su was a local lord of Yongjin who held a post at the Goryeo court.

In 1258 his son Jo Hwi mutinied, killed the north-eastern commander Sin Jip-pyeong and surrendered the lands beyond Hwaju to the Mongols. The Yuan made him first superintendent of the new Ssangseong Prefecture, an office held by Hwi and his descendants Yanggi, Rim and Sosaeng over four generations.

In 1356, when King Gongmin broke with the Yuan, Yanggi's son Jo Don, Sosaeng's uncle, turned against the commandery and helped General Yu In-u storm it, restoring the territory north of Cheolnyeong to Goryeo. Kinsmen such as Jo In-ok became founding merit subjects of Joseon after 1392; a later son was the reformist scholar Jo Gwang-jo (1482—1519).