The story
In 1902, Naples native Giovanni Amato and his wife, Michelina, opened a store on India Street in Portland, Maine. According to official literature, Amato's sandwiches contained ham, American cheese, and fresh vegetables, which the Italian immigrants along the waterfront seemed to enjoy. Amato named his sandwich the "Italian" in honor of his country and his people. Today, there are 40 locations operating under the Amato's brand. Dominic Reali, who purchased the business from the Amato family in 1972, also added Greek olives, sour pickles, and his own oil (a blend of olive and vegetable oil) to the famous Real Italian.
From Wikipedia’s article on Amato's, shared under CC BY-SA 4.0.4