Chalahgawtha (or, more commonly in English, Chillicothe) was the name of one of the five divisions (or bands) of the Shawnee, a Native American people, during the 18th century, as well as the name of the principal village of the division. The other four divisions were the Mekoche, Kispoko, Pekowi, and Hathawekela. (All five division names have been spelled in a great variety of ways.) Together these divisions formed the loose confederacy that was the Shawnee tribe.
By tradition, each Shawnee division had certain roles it performed on behalf of the entire tribe, although these customs were fading by the time they were recorded in writing by European-Americans. The Chillicothe division often provided political leadership for the tribe. A famous Chillicothe leader was Chief Blackfish.
The village where the chief of the Chillicothe division lived was also known as "Chillicothe". When this principal village was relocated, often as a result of war or the expansion of European-American settlement, the new village would be again be called "Chillicothe". Not all Shawnees living in the town belonged to the Chillicothe division, and some residents were from tribes other than the Shawnee. There are numerous Shawnee Chillicothe villages in the historical record, which has occasionally caused some confusion.
Lower Shawnee Town was a large Shawnee town on the Ohio River, founded about 1738 by Shawnees. The name of the town was not recorded, but scholars believe it may have been "Chillicothe". The town grew to be a major trading hub in the years leading up to the French and Indian War, although it was of lesser political importance than Logstown, upriver on the Ohio. Members from most if not all five Shawnee divisions lived in the town, as well as an assortment of other Native Americans, Europeans, and Africans, with an estimated total population of 1,200 or more people. Lower Shawnee Town was abandoned after the fall of Fort Duquesne in 1758.