of these theories was Immanuel ben Solomon of Rome, the celebrated friend of Dante Aligheri. The discord between the followers of Maimonides and his opponents wrought most serious damage to the interests of Judaism. The rise of poetry in Italy at the time of Dante influenced the Jews also. The rich and the powerful, partly by reason of sincere interest, partly in obedience to the spirit of the times, became patrons of Jewish writers, thus inducing the greatest activity on their part. This activity was particularly noticeable at Rome, where a new Jewish poetry arose, mainly through the works of Leo Romano, translator of the writings of Thomas Aquinas and author of exegetical works of merit; of Judah Siciliano, a writer in rimed prose; of Kalonymus ben Kalonymus, a famous satirical poet; and especially of the above-mentioned Immanuel. On the initiative of the Roman community, a Hebrew translation of Maimonides' Arabic commentary on the Mishnah was made. At this time Pope John XXII was on the point of pronouncing a ban against the Jews of Rome. The Jews instituted a day of public fasting and of prayer to appeal for divine assistance. King Robert of Sicily, who favored the Jews, sent an envoy to the pope at Avignon, who succeeded in averting this great peril. Immanuel himself described this envoy as a person of high merit and of great culture. This period of Jewish literature in Italy is indeed one of great splendor. After Immanuel there were no other Jewish writers of importance until Moses da Rieti (1388). Worsening conditions under Innocent III The position of Jews in Italy worsened considerably under Pope Innocent III (1198–1216). This pope threatened with excommunication those who placed or maintained Jews in public positions, and he insisted that every Jew holding office should be dismissed. The deepest insult was the order that every Jew must always wear, conspicuously displayed, a special yellow badge. In 1235 Pope Gregory IX published the first bull against the ritual murder accusation. Other popes followed his example, particularly Innocent IV in 1247, Gregory X in 1272, Clement VI in 1348, Gregory XI in 1371, Martin V in 1422, Nicholas V in 1447, Sixtus V in 1475, Paul III in 1540, and later Alexander VII, Clement XIII, and Clement XIV. Antipope Benedict XIII The Jews suffered much from the relentless persecutions of the Avignon-based antipope Benedict XIII. They hailed his