Abraham Senior, also known as Abraham Seneor or Senneor, was a figure of immense influence in 15th-century Spain, whose life trajectory encapsulates the complex and often tragic fate of the Jewish community during the reign of the Catholic Monarchs, Ferdinand II of Aragon and Isabella I of Castile. Born in Segovia around 1412, Senior rose from a prominent Jewish family to become a leading banker, politician, and chief rabbi, wielding significant power within the Castilian court. His story is inextricably linked with the pivotal year of 1492, a watershed moment in Spanish history marked by the conquest of Granada, Christopher Columbus's voyage to the Americas, and the infamous Edict of Expulsion of the Jews. Senior's ultimate decision to convert to Christianity, under immense pressure, transformed him into Ferrán Pérez Coronel, founding a noble lineage and becoming a symbol of the agonizing choices faced by thousands of his co-religionists. Abraham Senior, a pivotal figur...