Was some there specific language in Sicily or other Italian Jewish communities, like Ladino in Spain?
My internal map of Italy isn't very good, but given the 'size' of the populations that must speak or have spoken these dialects, I'd guess there was a dialect specific to Sicily.
[1] https://en.wikipedia.org/wiki/Judaeo-Spanish [2] https://en.wikipedia.org/wiki/Judeo-Italian_languages#Dialec...
"This Judaeo-Spanish ladino should not be confused with the ladino or Ladin language spoken in part of North-Eastern Italy, which is closely related with the rumantsch-ladin of Swiss Grisons (it is disputed whether or not they form a common Rhaeto-Romance language) and has nothing to do with either Jews or Spanish beyond being, like Spanish, a Romance language, a property they share with French, Italian, Portuguese and Romanian."