Likely reasons for Celestina being considered an anonymous work in the 16th and 17th centuries, and Rojas' work since the 19th century

Abstract

The interpretation of the paratexts of the Celestina in the light of the definitions of the Diccionario de Autoridades allows to differentiate between an anonymous «auctor» for the Carta and the «autor» identified in the acrostics, as well as to establish an equivalence between the old term «auctor» and the modern term «bestower», and «autor» with the modern «composer», «adapter», «editor». And because the editorial practices of 500 years ago allowed the reproduction of anonymous texts without any acknowledgement of authorship, it was only natural that originally Fernando de Rojas was not considered as the author (that is the creator) of the Celestina, and that this work was considered anonymous. Only the changes in words meaning and other circumstances related to the reception of the Celestina during the 19th century gave rise to an opinion favorable to attribute to Rojas the authorship.