The Alhambra Decree (also known as the Edict of Expulsion; Spanish: Decreto de la Alhambra, Edicto de Granada) was an edict issued on 31 March 1492, by the joint Catholic Monarchs of Spain (Isabella I of Castile and Ferdinand II of Aragon) ordering the expulsion of practicing Jews from the Crowns of Castile and Aragon and its territories and possessions by 31 July of that year.
The primary purpose was to eliminate their influence on Spain’s large converso population and ensure they did not revert to Judaism. Over half of Spain’s Jews had converted as a result of the religious persecution and pogroms which occurred in 1391.
Due to continuing attacks, around 50,000 more had converted by 1415. A further number of those remaining chose to convert to avoid expulsion. As a result of the Alhambra decree and persecution in prior years, over 200,000 Jews converted to Catholicism and between 40,000 and 100,000 were expelled, an unknown number returning to Spain in the years following the expulsion.
This led to Mass migration of Jews from Spain to Italy, Greece and the Mediterranean Basin. This can be seen with Jewish Surnames as they began to show up in Italy and Greece at this time, like Faraggi, Farag and Farachi a surname which orignates from the Spanish City of Fraga.