A drawing I made today of the Celtic God, Cernunnos. Free, High resolution version can be found here: Cernunnos - The horned God
The God is known from depictions, but the name is only found one place: on the Pillar of the Boatmen, from the Musée national du Moyen Âge in Paris. Lots of debate about the name among the scholars of course, but the attributes in the depictions are often similar. Crossed legs, antlers, a Celtic torc around the neck and in one hand, a snake with rams horns in the other. The most famous depiction is on an object I have seen very often, The Gundestrup cauldron, found in the North western part of Denmark.