The Cervantes scholar, Luis Astrana Marín, commented “... in 1923, the prestigious Cervantes scholar, distinguished historian and great paleographer, Don José de la Torre y del Cerro, unearthed a volume of hitherto unseen Cervantes documents [...]. Mr. de la Torre, in a short preamble, said that early in the summer of 1911, his brother Antonio and he turned to the Archive of Protocols to conduct research on Beatriz Enríquez de Harana and Christopher Columbus, the father of her son Ferdinand. He added: 'We then came across the oldest known documents on the Cervantes from Cordoba, two of which were on the graduate Rodrigo de Cervantes, great-grandfather of Miguel de Cervantes Saavedra.'”