Forum Tiberii
Eth. Forum Tiberii is placed by Ptolemy (2.9) among the Helvetii. It is unknown where it is. D'Anville guesses Kaiserstuhl on the Rhine, chiefly because of the meaning of the German name; which is very unsatisfactory. Haller guesses Zurzach on the Rhine, where there are Roman walls. Another guesses Steckborn on the Lake of Constanz. (Ukert, Gallien.)
From William Smith (ed.), Dictionary of Greek and Roman Geography. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.