I have long been wondering about the story behind these Mallorcan Jews in Nice. Now I was reading the "Xueta" article on Wikipedia, and I noticed that in the 1670's a new wave of persecution hit the (converted) Jews of Mallorca, and also that the refugee Jews from Oran who later ended up in Nice had a stop in Palma during that time. So I think that probably the Jews from Oran had had contact with local Jews, who ended up following them to Nice to escape persecution. Does anyone have further info to confirm or deny? https://en.wikipedia.org/wiki/Xueta