Spanish and Portuguese Jews (also known as
Western Sephardim, or more ambiguously as
Spanish Jews,
Portuguese Jews and
Jews of the Portuguese Nation) are a distinctive sub-group of
Sephardic Jews, descended mostly from Jews who were
forcibly or coercedly converted to
Catholicism in
Spain and
Portugal up until the expiration of the few-months deadlines stipulated in the Spanish
Alhambra Decree (1492) and its Portuguese counterpart (1497) for the Jews to leave, convert, or face execution. Consequently, those Jews who did not, or could not, leave Spain and Portugal prior to the expiration of the deadlines became
New Christian conversos. A century after the Spanish and Portuguese decrees, many among the conversos started emigrating and settling throughout areas of
Western Europe up until the 1700s, forming communities and formally reverting to Judaism.