Gerónimo de Aguilar

Gerónimo de Aguilar (1489 – 1531) was a Spanish friar involved in Hernán Cortés' conquest of Mexico.

In 1511, Aguilar was shipwrecked near the Yucatán Peninsula. Along with Gonzalo Guerrero, he began living with the Chetumal Mayans and learned their language. When Hernán Cortés and his men gained access to the Mayans through the slave Malinalli, they found Aguilar and Guerrero.

Aguilar was able to communicate with Malinalli through the Mayan language. On meeting the Nahuatl-speaking Aztecs of Tenochtitlan and Tlaxcalans, Malinalli translated Nahuatl to Mayan for Aguilar, who would then translate Mayan to Spanish for Cortés and his men.

Reference

 * Assassin's Creed: Project Legacy - Rome: Chapter 4 - Giovanni Borgia