North American Indian tribes speaking a language of the Iroquoian family - the Cayuga, Cherokee, Huron, Mohawk, Oneida, Onondaga, Seneca, or Tuscarora. The Iroquois occupied territory around Lakes Ontario, Huron, and Erie, in present-day New York state and Pennsylvania and southern Ontario and Quebec. It was a very important culture, dating from the middle of this millennium. The people lived in long houses, practiced agriculture, fished, hunted, and engaged in much warfare.