阿方索四世
In the beginning of the fourteenth century the position of Jews became precarious throughout Spain as [[antisemitism]] increased. Many Jews emigrated from Castile and from Aragon. It was not until the reigns of [[Alfonso IV of Aragon|Alfonso IV]] and [[Peter IV of Aragon]], and of the young and active [[Alfonso XI of Castile]] (1325), that an improvement set in. In 1328, 5,000 Jews were killed in [[Navarre]] following the preaching of a mendicant friar.