Antonio de Herrera y Tordesillas (1549 – 28 March 1626 or 27 March 1625) was a chronicler, historian, and writer of the Spanish Golden Age, author of Historia general de los hechos de los castellanos en las Islas y Tierra Firme del mar Océano que llaman Indias Occidentales ("General History of the Deeds of the Castilians on the Islands and Mainland of the Ocean Sea Known As the West Indies"), better known in Spanish as Décadas and considered one of the best works written on the conquest of the Americas.
He was Chief Chronicler of Castile and the Americas during the reigns of Philip II and Philip III. Cristóbal Pérez Pastor called him the "prince of the historians of the Americas". He is considered the most prolific historian of his era, and his works also include a general history of the world, a history of Portugal, and a description of the Americas. His output also features translations of works from Italian and Latin into Spanish, and a translation of his own Descripción de las Indias Occidentales ("Description of the West Indies") into Dutch.
Herrera is not given much value by modern historians. A standard Spanish reference work describes him as "an official historian, who was not impartial....[He was] an opportunist, a schemer, and greedy.... He plagiarized entire works which were unpublished at the time.... He had no interest in Native American civilization and therefore never dealt with it."
He was born in Cuéllar, Province of Segovia, into a well-to-do noble family, the son of Rodrigo de Tordesillas (the son of another Rodrigo de Tordesillas who died at the hands of the comuneros) and Inés de Herrera. He himself placed his mother's surname before his father's in opposition to convention.
He undertook his earliest studies in the [Latin] grammar school of his hometown, developing a notable facility for getting to know people and an inexhaustible capacity for work, which would later be confirmed. His education (especially in Latin), perhaps pursued at the University of Salamanca, reached its pinnacle in Italy. In 1570 he traveled to Italy in the service of Prince Vespasiano I Gonzaga, one of the most distinguished personages of his era in Italy. His knowledge of Latin increased as he learned Italian.