Cissonius

Cissonius (also Cisonius, Cesonius) was an ancient Gaulish/Celtic god. After Visucius, Cissonius was the most common name of the Gaulish/Celtic Mercury; around seventeen inscriptions dedicated to him extend from France and Southern Germany into Switzerland.

Name
The name has been interpreted as meaning 'carriage-driver' (from cissum 'carriage'), or 'dream-bringer' (from cit- attached to souno- 'sleep, dream').

A goddess Cissonia is also recorded.

Cult
He was probably a god of trade and protector of travellers, since Mercury exercised similar functions in the Roman pantheon.

In one inscription from Promontogno in Switzerland, Cissonus is identified with Matutinus.