The Medulli (Gaulish: Medulloi) were a Gallic tribe dwelling in the upper valley of Maurienne, around present-day Modane (Savoie), during the Iron Age and Roman period.
This interpretation is encouraged by the mention, in Vitruvius' De architetura, of a "kind of water" (genus aquae) drunk by the Medulli.
[6][5] Alternatively, Javier de Hoz has proposed to glose the name as 'those who lived in the middle', or 'in the border woods', by connecting it to the root *medhi/u- ('middle').
[10] They are mentioned by Pliny the Elder as one of the Alpine tribes conquered by Rome in 16–15 BC, and whose name was engraved on the Tropaeum Alpium.
[10] Among the Aquiculi in Italy and among the tribe of the Medulli in the Alps, there is a kind of water which causes goitre among those who drink it.