Cosedia
Cosedia a place in Gallia, in the country of the Unelli. The Antonine Itin. places it on a road from Alauna (Aleaume) to Condate (Rennes). The Table gives a route from Coriallum (Cherbourg) to Condate through Cosedia, which is the next place to Coriallum. D'Anville discusses the site of Cosedia without determining its position, for there is great difficulty about the distances. Some geographers take Cosedia to be La Cousinière; and there are other guesses.
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.