I know that some fig growers believe that Hardy Chicago and similar type figs come from the Mount Etna region of Sicily. I am very interested in these figs, as HC was the first fig variety that I ever purchased. I also grew up in house that had a HC type unknown (Joe's Jersey) growing in the yard. I also have Marseilles VS and I would consider it to be a similar type of fig. I don't grow Sal's but have heard that some consider it to be a similar type. All of these figs are tough, healthy growers, with small fruit. They have a strong fig flavor, but are not as sweet as some other figs. HC, MVS, and my unknown all have a similar leaf and growth habit. I observe that in addition to being cold hardy, these figs also grow very well in the Arizona heat. Their leaves do not curl from the heat as some other varieties do for me.
Recently I was reading Gustav Eisen's The Fig: Its History, Culture, and Curing. Eisen describes the figs that are grown in different regions of the world. When talking about the figs of Italy, he says that the most important fig regions are in the south of the country, basically from the area around Naples down to Sicily. He says that the figs in the Naples area are "small, averaging about one-third the size of the Smyrna figs, while in sweetness they are hardly equal to the Smyrnas." He goes on to say the further south one goes the larger and sweeter the figs become. He says that in Sicily the figs are large and sweet. He says that the figs grown around Palermo, Sicily are "the largest figs produced in Italy, almost equaling those of Smyrna in size, while exceeding them in sweetness". All of this is found in his book on pages 40 - 41.
After reading Eisen's descriptions, it seems to me that these HC type figs are much closer to his description of the figs grown around Naples than of the figs in Sicily. Naples is also where so many Italian families who immigrated to the U.S. originally came from. Is it possible that these HC type figs come from the Naples area instead of from Sicily? Besides MVS, which was brought back to the U.S. by a returning soldier from WWII, all of these figs were unknowns growing in Italian neighborhoods.