Francisco Antonio Pimentel accounts of the armed expedition to Tiburon Island with Don Diego Ortiz Parilla, governor and captain of the provinces of Sinaloa, Ostimuri, and Sonora. This voyage included armed captains, soldiers, and large groups of Pimas and Jesuits whose primary intent was to forcefully remove and displace the Seri [Yoris] Nation and establish a Jesuit mission program. At the end of the diary, Pimentel includes a romanticized poem about Tiburon Island.