More than half a century before the expulsion of Jews from Spain in 1492, hundreds of Jewish men, women and children on the Spanish Mediterranean island of Majorca were forcibly converted to Roman Catholicism. They were to be known as Xuetas, which may come from the word “Jueto,” or “little Jew.”
The converts became crypto-Jews, practising Judaism clandestinely while masquerading as Christians. They kept to themselves, married each other, and took surnames ranging from Pinya, Pomar, Miro and Pico to Cortes, Marti, Fortesa and Fuster.
https://blogs.timesofisrael.com/xueta-island/