1350 - 1414 ISAAC DURAN (Profiat Duran) (Spain)
Scholar, astronomer, physician and philosopher. Though forcibly converted to Christianity, he reverted back to Judaism as soon as possible. After one of his friends was also converted and decided to remain Christian, he wrote two brilliant attacks on Christianity: Al Tehi ka-Avotekha (Be Not Like Your Fathers) and Kelimat ha-Goyim (The Confusion Of The Gentiles). The first was such a successful satire, that some Christian scholars actually thought it was pro-Christian and republished it until they realized the true meaning behind it. His Ma'aseh Efod (The Making of the Ephod) discussed both linguistics and the fundamental nature of Jewish music. He also wrote a historical work Zikaron haShemadot. ( A Record of Persecutions) .
C. 1350 ISAAC TYRNAU (late 14th-early 15th century) ( Austria)
In the introduction to his Sefer HaMinhagim ("Book of Customs") he describes the poor condition of Torah study in Hungary. He was the first Rabbi to discuss in detail the idea of Yahrzeit - anniversary of a death.
1350 - 1396 JOHN I (Aragon, Spain)
Son of Peter(Pedro)IV, known before his coronation as the Infante(crown prince) Don Juan. Although prior to his reign (1387-1396) he was in the forefront of anti-Jewish agitation, he adopted a somewhat less belligerent policy as king.
1355 May 7, TOLEDO (Spain)
Henry de Trastamasa, step-brother of Peter the Cruel, invaded Toledo on the pretense of rescuing the Queen Blance from Peter. Twelve hundred Jews were killed. His hatred for his brother, Jews, and his brothers good relationship with Jews, were ostensibly part of his reasons for his attacks against him. Bitter fighting within the Jewish quarter repelled the attack. As a reward for the courage of the Jews and loyalty of his advisor, Samuel ben Meir Halevi (Abulafia), Pedro allowed him to construct a beautiful synagogue (1357) which was later converted into a church under the name of El Tránsito. A few years later despite his service, Abulafia lost favor with the king and he was painfully murdered.(see 1360).
1356 GOLDEN BULL OF CHARLES IV (Germany)
Alienated all rights of Jews. This led to the common practice of expelling the Jews from one district and, due to financial considerations, accepting them in another.
1356 ESTHERKA ( Poland)
Daughter of a Jewish tailor won over Casimir III "The Great" (1310-1370) so completely that many of his pro Jewish enactments are said to be due to her. He installed her in a royal palace near Cracow. She was said to have born him 2 sons and two daughters. The daughters raised as Jews and the sons as Christian. She was killed around 1370 by Casimir's successor, Louis of Hungary during his persecution of the Jews.
1356 THE COUNCIL OF ARAGON COMMUNITIES (Spain)
Six years after the 1348 riots, community leaders met in order to formulate a united front in representing their case before the King and Pope. Due to the lack of a consensus on the makeup of the council and the fear of the local communities of losing their independence of action none of the resolutions were enacted.rn rnrn rn
The defeat by the English at Poitiers, and the ransom that was needed to be raised, led to a financial crisis. This prompted King John II ( The Good), to readmit the Jews (mostly financiers) back to France, this time for 70 years.