Born in Alarcón (Cuenca), he was the initiator of the Spanish reformation of the order of San Agustín, in 1431. He frequented the literary Court of Juan II of Castile, and frequently toured Italy. He dedicated his work book of the regiment of princes, which belongs to the genre of work de regimine principum, which proliferate since the beginning of the 14th century to Álvaro de Luna. These works, with a didactic purpose, define the obligations and duties of rulers, as well as teachings of spiritual type are offered.
F. Rubio, ed.: "Book of Lords Regiment", at Castellanos prose writers of the fifteenth century, II (Madrid, 1960), pp. 156-216.