Diego Luis de San Vitores was a Spanish Jesuit priest born in Burgos in 1627. He is recognized for establishing the first Catholic presence in the Mariana Islands, specifically on Guam, where he founded the first church in Hagåtña. After securing support from the Spanish royal court, he arrived in the archipelago in 1668 to begin his mission. His efforts to introduce Christian doctrine led to significant cultural shifts and eventual conflict with the indigenous Chamorro people. He died in Tumon in 1672 during a period of intense local resistance.