Although Marchiony is credited with the invention of the cone, a similar creation was independently introduced at the 1904 St. Louis World's Fair by Ernest A. Hamwi, a Syrian concessionaire. Hamwi was selling a crisp, waffle-like pastry -- zalabis -- in a booth right next to an ice cream vendor.
Because of ice cream's popularity, the vendor ran out of dishes. Hamwi saw an easy solution to the ice cream vendor's problem: he quickly rolled one of his wafer-like waffles in the shape of a cone, or cornucopia, and gave it to the ice cream vendor. The cone cooled in a few seconds, the vendor put some ice cream in it, the customers were happy and the cone was on its way to becoming the great American institution that it is today.
According to idfa