Garci Rodríguez de Montalvo was a Castilian author who arranged the modern version of the chivalric romance Amadis of Gaul, written in three books in the 14th century by an unknown author.
Montalvo added a fourth book of his own and also wrote a sequel, Las sergas de Esplandián (The Exploits of Esplandián or The Adventures of Esplandián) (oldest known printing, 1510), in which he tells the life and wandering of Amadis' eldest son.

The saga was continued by books by later authors. The books were the sixth novel, Florisando (by Ruiz Paez de Ribera, 1510), followed by Lisuarte of Greece (by Feliciano de Silva, 1514), Lisuarte of Greece (by Juan Diaz, 1525), Amadis of Greece (by Feliciano de Silva, 1530), etc.