Condatis (Gaulish: 'confluence') was an ancient Celtic deity worshipped primarily in northern Britain but also in Gaul.
[b] The theonym Condatis derives from the stem condāt-, meaning 'confluence', itself from Proto-Celtic *kom-dati-, from an earlier kom-dhh1-ti- ('put with, put together', i.e. 'grouping, reunion').
[2][3] The stem condāt- is also attested in personal names, including Condatus, Condatius, and Condatie, as well as in toponyms such as Condé, Condat, Candé, Conte, Condes, Candes, Cosnes, Condate (the old name of Rennes and Northwich), Condom, Condéon (both from *Condate-o-magos), Cond (< *Condate-dunum), Kontz, Conz (Trier), and Canstatt (Condistat).
[4][2] The cult title is probably related to the place name Condate, often used in Gaul for settlements at the confluence of rivers.
[c][d][e] Roman altars with inscriptions to Mars Condates have been found in the Tees and Wear valleys of County Durham.