The news about the presence of coppersmiths in Isili are very rare and only in the nineteenth century you have data of a certain size. The oral tradition speaks vaguely of a group of strangers who began working in the district of Coroneddu without further explanation. They make many assumptions about a group of some gypsies or Jews, but there are no documentation testifying that.
The use of a particular jargon (or s'arromaniscu s'arbaresca) by coppersmiths from Isili suggests some kind of descendance from the gypsies, but against this hypothesis, there are a number of arguments that lead to consider it wrong. The first scholar to suggest a likely origin in the first half of the 900 was the linguist Ugo Pellis. He connects one of the denominations of the isilese jargon: arromaniscu Roma and Romanes, terms such as gypsies recognize themselves and their language. Pellis has also found a link between the spoken isilese and the jargon of Tramonti in Friuli.
