El objetivo de este trabajo es analizar un documento de tiempos de Juan II de Castilla que, junto con otros testimonios, permite no sólo asegurar la realización de importantes obras en el Alcázar de Sevilla durante ese reinado sino plantear la hipótesis de que todo el salón de la Media Naranja, conocido hoy como salón de Embajadores, sea obra de este monarca. Juan II era a la vez bisnieto de Enrique II por línea directa masculina y de Pedro I por línea de su madre, Catalina de Láncaster, hija de Juan de Gante y Constanza de Castilla, hija ésta de Pedro I. Con él se puede decir que termina el litigio dinástico abierto por la pugna entre Enrique II contra Pedro I. Tiene por tanto toda lógica que este monarca reivindique, como prueba de legitimidad, su doble ascendencia a través de la rehabilitación y completamiento del edificio más emblemático de los realizados por su bisabuelo materno, que seguramente había quedado inconcluso.
The goal of this article is to analyse a document from the rule of Juan II of Castile. This document, together with other testimonies, prove that major construction works were carried out in the Alcazar of Seville during the years of that reign, and it allows us to propose as an hypothesis that the Hall of the Media Naranja, known today as the Embassadors’ Hall, may have been sponsored by this king. Juan II was great-grandson of Enrique II on his father’s side, and of Pedro I on his mother’s, Catalina of Lancaster. Her parents were John of Ghent and Constanza of Castile who, in turn, was Pedro I’s daughter. He represented the end of a dynastic struggle that had started with the fight between Enrique II and Pedro I. It would therefore make sense that this king would claim his double ancestry as proof for his legitimacy through the restoration and completion of his maternal great-grand father’ most emblematic building.