Rafael Altamira,
A History of Spain
“ In institutions, Aragon proper must be distinguished, throughout this period, from the Catalonian region of the greater kingdom of Aragon. Social differences were much more marked than in León and Castile, for there was an excessively privileged feudal nobility, which had a despotic power over the servile classes; the movement for emancipation from slavery and serfdom belongs to a much later time. Lords had a right even to kill their serfs. ”
