Glaucus of Chios in Wikipedia

According to Herodotus, Alyattes, the Lydian King and father of Croesus, gave a salver of welded iron to the Oracle of Delphi. This salver, "the most remarkable of all the offerings at Delphi," was the work of Glaucus of Chios, "the inventor of the art of welding."[1]

Read More about Glaucus of Chios in Wikipedia