The Battle of Kathio, or Battle of Izatys, was an oral tradition of the Chippewa reporting a battle fought in 1750 between Chippewas and the Sioux at the village of Kathio, or Izatys, on the Rum River next to Mille Lacs Lake. To date no archaeological evidence has been found to support the historical validity of this story, although French explorer Daniel Greysolon, Sieur du Lhut did, in 1679, record the existence of 40 Sioux villages in the vicinity.