The process of integrating Jedeoconverts into the HispanoChristian society was deeply controversial and was one of the most relevant issues in Castilla y of the xv century. The centuries of the 15th centuria were marked by an interesting controversial doctrine around the so-called ‘Sentencia-Estatuto’ of Pero Sarmiento, which ordered the exclusion of Jews and Jewish converts from all public professions in the city of Toledo. This debate was attended by the Bishop of Cuenca Lope de Barrientos, one of the most prominent personalities in the political and ecclesiastical landscape of Castile in mid-the xv century. In addition to other prominent figures at the time (Fernán Díaz de Toledo, Alonso de Cartagena, Juan de Torburada), Barrientos argued for the full integration of Jedeoconverts into HispanoChristian society, as well as the need for tolerance towards those newly converted to Christianity as long as the process of indoctrination in their new religion was ongoing. The debate lasted during the second half of the xv century, with the long-term imposition of restrictive measures against the public action of new Christians, who would crystallise in the removal of judailators and their descendants from the exercise of public professions and in the appearance of the ‘blood-cleaning statuses’, already on the eve of the Modernity.The integration process of the Jewish converts in the Christian spanish society was highy controversial and city it suppoused one of the most relevant sub-converts in the Castile of the XV century. The Bishop of Cuenca, Lope de Barrientos, one of the most relevant political and ecclesiastic figure of that time, took pan in that debate. In collaboration with other individuals (Fernán Díaz de Toledo, Alonso de Cartagena, Juan de Torburada), Barrientos offered the full integration of the CONVENT Jewish in the Christian spanish society, as well as the need of tolerance towards the new converts to christianism during the process of indoctrination to their new religion. The discussion continued over the second half of the XV century, finally by those who provided the implementation of restrictions for the civil service participation of the new Christians. The sequence was the exclusion of the Jewish and its descendants from the civil service and the entry into forcé of the “purity of blood repeatedly”, on the eve of the Modernity.