In Gallo-Roman religion, Sucellus or Sucellos was a deity depicted as carrying a large mallet (also described as a hammer) and also an olla and/or barrel. Originally a Celtic deity, his cult flourished not only among Gallo-Romans, but also to some extent among the neighbouring peoples of Raetia and Britain. He has been associated with agriculture and wine, particularly in the territory of the Aedui.
He is usually portrayed as a middle-aged bearded man, with a long-handled hammer, or perhaps a beer barrel suspended from a pole. His companion Nantosuelta is sometimes depicted alongside him. When together, they are accompanied by symbols associated with prosperity and domesticity.
In a well-known relief from Sarrebourg, near Metz, Nantosuelta, wearing a long gown, is standing to the left. In her left hand she holds a small house-shaped object with two circular holes and a peaked roof – perhaps a dovecote – on a long pole. Her right hand holds a patera which she is tipping onto a cylindrical altar. To the right Sucellus stands, bearded, in a tunic with a cloak over his right shoulder. He holds his mallet in his right hand and an olla in his left. Above the figures is a dedicatory inscription and below them in very low relief is a raven. This sculpture was dated by Reinach, from the form of the letters, to the end of the first century or start of the second century.
At least eleven inscriptions to Sucellus are known, mostly from Gaul. One (RIB II, 3/2422.21) is from Eboracum (modern York) in Britain.
In an inscription from Augusta Rauricorum (modern Augst), Sucellus is identified with Silvanus: