This study aims to show the different resources used by Gonzalo Fernandez de Oviedo to write and structure his Historia general y natural de las Indias. One of them has to do with the use of the chronicle written by fray Gaspar de Carvajal, on the journey of Omagua and El Dorado, commanded by Francisco de Orellana. By modifying the story of Carvajal, Oviedo lets us see the temptation and almost the need to make history from the personalized experience, and does so with a specific goal: to convince the reader that everything included in his story is true. Oviedo rewrites the story of Carvajal and by doing so, creates an alternate narrative, with some of the characteristics of the source, but with key differences that allow us to see the process that gave shape to changed his account.