Bartolomé de las Casas
Cisneros granted the title of "Protector de Indios" to Bartolomé de las Casas, and he was given instructions to serve as an adviser regarding issues concerning the native population. Bartolomé de las Casas was also asked to speak on their behalf during legal proceedings, reporting back to Spain. For over fifty years, while traveling to and from the New World and the court of Spain, Bartolomé de las Casas used his books, letters, and preaching to reveal the harshness of the conquests. Other notable protectors included Juan de Zumárraga (appointed 1527) and Hernando de Luque (appointed 1529).