CHATTI, an ancient German tribe inhabiting the upper reaches of the rivers Weser, Eder, Fulda and Werra, a district approximately corresponding to Hesse-Cassel, though probably somewhat more extensive. They frequently came into conflict with the Romans during the early years of the 1st century A.D. Eventually they formed a portion of the Franks and were incor porated in the kingdom of Clovis at the beginning of the 6th century.
See Tacitus, Annals, i., ii., xi., xii. and xiii. ; Germania,