After my discovery of the author of La Celestina, the writer Gonzalo Fernandez de Oviedo, the time had come to dedicate all my activity to finding a missing writer by the name of Rojas. I already had some ideas for doing this work, because in the last few years I acquired traces of his activity. I thought that it might be a good idea to express in this work how I fixed it to obtain traces of Fernando de Rojas and find his unknown books. A writer is a writer, so I thought that it would be a matter of time, because I was sure that Rojas must have written various books. On the other hand I was sure that the Lucena clan worked closely together due to suspected consanguinity. The reader or researcher of this book will observe that this book could be full of mistakes, but also full of right guesses. I will not lose any seat at a university, so my writing is full of freedom. I have observed that many researchers make very good studies full of bibliography and general ideas. However, it is difficult to find out if there is really something new in those studies, because they do not like to cross the line. This is something that I do and I prefer to go into unknown territory, just as I did during my short draughts career and business life.