Sephardic Bnei Anusim forebear/s who was/were forced to convert from Judaism to Catholicism. In regards to the second issue, in Rabbinic Judaism, a person's Jewish status is determined in one of two ways: Thus, natural-born Jewish status of a child (male or female) comes from its mother, via its maternal grandmother, via its maternal great-grandmother, and so on. As a consequence of the number of generations that have passed since the forced conversion of the Anusim ancestors of the Sephardic Bnei Anusim, the likelihood of a broken direct maternal Jewish lineage in that time (or the difficulty in producing documentary evidence proving otherwise)
Sephardic Bnei Anusim Jews during the 15th century. Surnames known to have been carried by Jews included Pérez, López, Salazar, Córdova, Torres, Castro, Álvarez, González, Gómez, Fernández. It is extremely important to note, however, that all of these mentioned surnames, and almost all other surnames which were carried by 15th century Sephardim, were never specifically Jewish in origin, that is, they were never exclusively "Sephardic surnames", if such a thing exists other than in the most rarest and limited of cases. Almost all these surnames are in fact surnames of gentile Spanish origin (or gentile Portuguese origin) which only became common among Sephardic