Horse Brass Celtic Claddagh Necklace13. 25 in L Horse Brass Medallions originated from the Romans and were used as amulets to ward off evil spirits. They were also symbols of wealth and status. During the reign of Queen Elizabeth 1st, horse medallions represented the production of various crops in a region. Today they are simply decorative and represent various groups, clubs, and corporations. The claddagh is an Irish symbol representing three fundamental values in human relationships.