Alejandro Ríos Conejero holds a PhD in History from the Complutense University of Madrid, where he completed his doctoral thesis, “Urban hierarchisation in the kingdom of Seville: concurrence, collaboration and rivalry at the dawn of the Modern Age“, jointly supervised by María Asenjo González and Antonio Collantes de Terán Sánchez. The thesis was awarded the highest distinction, sobresaliente cum laude, and received the International Doctorate distinction. He previously completed a Master’s degree in Advanced Studies and Research in History at the University of Zaragoza, where he also obtained his degree in History. His research focuses on urban history in the Late Middle Ages and on political elites in the Kingdom of Aragon during the fourteenth and fifteenth centuries. He has published a monograph, several book chapters and articles in academic journals on these subjects. He is a member of the research teams of several funded projects, the HISEURAM research group, and the Young Scientific Council of the Instituto de Estudios Turolenses. Alongside his research, he has worked as an archivist at the Provincial Historical Archive of Huesca and the Municipal Archive of Teruel and has university teaching experience. He has taught at the University of Zaragoza’s University of Experience and on the Archaeology, History and History of Art degree programmes at the Complutense University of Madrid. He has also been actively involved in a range of public engagement and knowledge-transfer projects, notably coordinating content and curating the exhibitions Las Señoras de Sijena. La vida cotidiana en un monasterio femenino (siglos XII-XX) and Pedro Martínez de Luna y Pérez de Gotor: la forja de un Papa, as well as contributing to documentaries and television and radio programmes.