Seduni
Eth. Seduni a people in the valley of the Upper Rhone, whom Caesar (Caes. Gal. 3.1, 7) mentions: Nantuates Sedunos Veragrosque.
They are also mentioned in the trophy of the Alps (Plin. Nat. 3.20) in the same order. They are east of the Veragri, and in the Valais. Their chief town had the same name as the people. The French call it Sion, and the Germans name it Sitten, which is the ancient name, for it was called Sedunum in the middle ages. An inscription has been found at Sion: Civitas Sedunorum Patrono.
Sitten is on the right bank of the Rhone, and crossed by a stream called Sionne. The town-hall is said to contain several Roman inscriptions. [NANTUATES; OCTODURUS.]
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.