Another post from FB Group The Sephardic Diaspora which mentions some Jews from Morocco, merchants, on their way through Lisbon, where they were recorded with their names and the name of the ship that they sailed on."I have been rereading a book by Herman Prins Salomon. On page 126 in a footnote to his “Portrait of a New Christian Fernao Álvares Melo, Paris 1982, Herman Prins Salomon writes:One of the most paradoxical aspects of life under the Inquisition inseventeenth-century Lisbon is the documented and authorized residence there of practicing Jews, mostly from Morocco, who, once they registered with the Inquisition and provided they carried some kind of identifying mark (sinal) were free to go about their business and, probably, to hold private Jewish religious services. The Inquisition, of course, was directed only against Catholics supposedly engaged in heretical activities, not against Jews as such (judeus de sinal). (… …) The Inquisitorial registers of all Jews taking up residence at Lisbon (Livros dos Judeus de Signal), mentioned in the survey of the National Archives' resourcesin 1905, have unfortunately disappeared. Cf. Pedro d'Azevedo and Antonio Baiâo, O Archivo da Torre do Tomba, Lisbon, 1905, 70.I found the book H.P. Salomon mentioned, it is now online. https://archive.org/details/oarchivodatorred00azevuoftOn page 70 there is indeed talk of “Livros dos Judeus de Signal”, and you may find it here:[https://digitarq.arquivos.pt/details?id=2299840](https://digitarq.arquivos.pt/details?id=2299840)So not all is lost. It is a fascinating list, but it also serves to somewhat modify Salomon’s view of them. Over the years there were few entries in this “Judeus de Signal”. One or two per year. They were given permission to stay for a month, six weeks. Sometimes their period of stay was prolonged. Places of origin include Sale, Tetuan, Livorno, Fresne, The Hague. Some returned time after time, a few years apart, proving that indeed they could go about their business, provided they wore a “Sinal”. The mark that is mentioned might have been a yellow hat.