In compiling the list, Bias Valera had the use of the following original authorities :
The Quipus of Juan Collque,
The Quipus of Cuzco, Chinchay-suyu, Cunti-suyu, Tarma, Pachacamac, and Sacsahuanac;
the Narratives of Don Luis Inca, in Quichua,
The Narratives of Don Sebastian Nina Uilca,
The Narratives of Don Diego Rocca Inca,
The Narratives of Francisco Chaves (friend of Titu Atauchi),
The Narratives of Ludovico Alvarez ('De Titulo Regni Peruani');
the 'Apologia pro Indis' of Lie Falcon;
all since lost.
Montesinos believed that Peru was first peopled by Armenians under the leadership of Ophir, a descendant of Noah; and his mind was full of a chronology based on the date of the deluge approved by Holy Church. Starting with all this nonsense, he read the works on Peru already published in his time, and finally fell in with the list of kings at La Paz. He tried to turn it into what he thought was history by adding events taken from works on the Inca history, to the bare record of the names of kings. Thus he attributes the great Inca Pachacuti's Chanca war to one of the earliest kings in the list, placed by him a century or so after the deluge. In short, having read the history of the Incas in other works, and seeing the long list of early kings without any events, he took the accounts of Inca events, and of their customs and ceremonies, and distributed them among the reigns of the ancient kings.
