According to Dane-zaa oral history, the Peace River is named for the settling of a conflict between the Dane-zaa and the Cree. The Cree traditionally lived south and east of the Upper Peace River region. Due to their trade with settlers, they had guns and they pushed the Dane-zaa northwest in the late 18th century. A peace treaty, negotiated in the late 1700s or early 1800s, stated that the Cree would live south of the Peace River, and the Dane-zaa north. The Peace River, before and after its new name, marked a boundary zone, where groups met for trade, celebration, and settling of disputes.