Ah look, a can... wonder what's inside...

Speculation over the Cassi began simply because of the similarity in names with some of the Gaulish tribes whose names ended in -casses and because Cassivellaunus of the Catuvellauni has a name starting with Cassi-. The latter led some people to suggest that he belonged to the Cassi who were possibly one of the septs of the Catuvellauni... however, the Cassi along with four other tribes sided with Caesar and revealed to him how best to attack Cassivellaunus' stronghold - it would have to be explained why they would not only be stabbing their own chief in the back, but also planning to help sack their own capital. Some people, such as Daithi O hOgain in his The Celts: A History, suggested that all the -casses tribes were originally one tribe that split up. The EB team expanded this to include the British Cassi. However, the fact remains that the only solid material that can be found on them is their name and their political stance regarding Caesar.