The world I'm crafting is an extension of human mythology and I am drawing a blank on mythological gods who wielded a hammer and represented the earth element. And if possible the water element.
I have Thor for wind and Vulcan for Fire, but totally blank on possibilities for Earth. Help would be appreciated, please find mythological references for hammer wielding gods who either are or could be associated with those elements.
EDIT: preferably craft oriented.
The Sucellus answer is pretty good though I did not expect agrarian wine gods to carry mallets (I guess it helps with the mashing). The ultimate idea is that this is like a divine forge for weapons, armor, and other equipment.