Some version of his account circulated in central Mexico in the 1560s and 1570s, prior to its seventeenth-century publication. Bernal Díaz's account is mentioned by Alonso de Zorita, a royal official who wrote an account of indigenous society, and mestizo Diego Muñoz Camargo, who wrote a full-length account of the Tlaxcalans' participation in the conquest of the Mexica. Bernal Díaz's manuscript was expanded in response to what he later found in the official biography of Hernán Cortés commissioned by Cortés's heir, Don Martín Cortés, published in 1552 by Francisco López de Gómara. The title "Historia verdadera" (True History) is in part a response to the claims made by Hernán Cortés in his published letters to the king, López de Gómara, Bartolomé de las Casas, Gonzalo de Illescas and others who had not participated in the campaign. Bernal Díaz also used the publication of Juan Ginés de Sepúlveda on just war, which allowed Bernal Díaz to cast the conquest of Mexico as a just conquest.