What would someone from Norway in the olden days wear when horseback riding? and what kind of tack would the horse have on if the horse was a norwegian fjord horse?

I want to enter a Viking Fest in Poulsbo with my norwegian fjord horse, and it says that all parade participants must have some form of Scandinavian design as part of their floats and or dress, so I need some ideas what I should wear, and what kind of tack my horse should have? Thanks