In the alternate world in which America was discovered by Lombardi instead of Columbus, Salvador replies to the patrol's claims with "Así que Colón fue quien lombardizó America" ("So Columbus was who lombardized America"). This implies that the word "colonizar" ("to colonize") is derived from Columbus' Spanish name, Colón. In reality, the word (in Spanish as in English) is derived from the Latin word for colony, "colonia", which was already used in Roman times.
1485 Columbus complains that "the Catholic Monarchs" don't want to receive him. They weren't called that before 1496, when they were granted the title by Pope Alexander VI.
Sonia says that Móstoles has a Medieval fair during Christmas, but it actually takes place in September.