The main purpose of this study is to show the development of the morphology of the Castilian of XIII century, which can be separated on two large episodes: archaic and innovative. Analyzing the texts of that period, the author will demonstrate the impact of Spanish king Alfonso X of Castile's work on the morphological paradigm through the innovation of linguistics forms which resulted, above all, by establishing Spanish as the official language in the Kingdom of Castile and León.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.