In medieval Catalonia, capbreus (caput breve) were documents that recorded peasant’s recognition of a lord’s rights and the revenues obtained by his/her agents. They were a primitive mode of account by inventory, created for administrative and fiscal purposes. They represent an important source of information about the medieval economy and social relationships. This article discusses Elisenda de Riudeperes, her people, and the properties she owned, as well as the benefits she obtained from them in the XIII century. It also provides important information concerning place-names and metrology
