 her name would still legally be her birth name.This custom of adding the husband's surname is slowly fading.Sometimes a father transmits his combined family names, thus creating a new one e.g., the paternal surname of the son of "Javier" (given name) "Reyes" (paternal family name) "de la Barrera" (maternal surname) may become the new paternal surname "Reyes de la Barrera".