Zebulon Pike identified this river as the Jeffreon in his August 19 journal entry with the spelling "Jauflione", although no distinction other than "The Jauflione is about 30 yards wide at its mouth, and bears from the Mississippi about S.W." serves to distinguish it from the nearby Fabius Rivers or South River.
Zebulon Pike noted this river as the Jeffreon in his journal entry on August 19, with the spelling "Jauflione", although no distinguishing feature is mentioned other than its location relative to the Mississippi and nearby rivers.