Yoon Gwan, who expanded Korea's northern territories, died in 1111 and was buried in this hill. But the tomb was lost as continuous wars ravaged the country and his family's power declined. When Shim Ji Won, the prime minister, died in 1662, his family buried him in the same hill.
The feud erupted in the mid-18th century when the Yoon clan, with its influence on the rise again, rediscovered the general's grave - as it turned out, only meters downhill from Shim's.
Petitions and clashes followed. King Young Jo presided over a hearing in 1764 and ordered the clans to respect the two graves as they were. But the families continued to bicker, vandalizing each other's tombs, and the irate king punished the 70-year-old patriarchs of the rival factions by flogging and exiling them. One of them, a Yoon, died from the effects of the beating. Animosity only deepened.