'De e Para Portugal. A Circulação de Nobres na Hispânia Medieval (Séculos XII a XV)'

The analysis of the circulation of nobles among the various peninsular realms, from the 12 th to the 15 th century, can be an excellent and helpful observatory to a better understanding of the evolution of nobiliary and regal powers, as well as the links between them, in a period marked by the gradual affirmation of national monarchies. Besides these issues, and with a special emphasis on the relationship between Portugal and Castille, it can be of great interest to verify until when, to the nobility, the links of blood and the interest of lineage were superposed to the growing importance of the definition of the political frontiers in medieval Hispania.