In 1581 three Spanish missionaries--Fray Agostin Rodriguez, Fray Francisco Lopez, and Fray Juan de Santa Maria--started from Santa Barbara, Chihuahua (Mexico), with an escort of nine Spanish soldiers under command of Francisco Sanchez Chamuscado. They trudged up along the Rio Grande to where Bernalillo now is,--a walk of a thousand miles. There the missionaries remained to teach the gospel, while the soldiers explored the country as far as Zuni, and then returned to Santa Barbara. Chamuscado died on the way. As for the brave missionaries who had been left behind in the wilderness, they soon became martyrs. Fray Santa Maria was slain by the Indians near San Pedro, while trudging back to Mexico alone that fall. Fray Rodriguez and Fray Lopez were assassinated by their treacherous flock at Puaray, in December, 1581. In the following year Antonio de Espejo, a wealthy native of Cordova, started from Santa Barbara in Chihuahua, with fourteen men to face the deserts and the savages of New Mexico. He marched up the Rio Grande to some distance above where Albuquerque now stands, meeting no opposition from the Pueblo Indians. He visited their cities of Zia, Jemez, lofty Acoma, Zuni, and far-off Moqui, and travelled a long way out into northern Arizona. Returning to the Rio Grande, he visited the pueblo of Pecos, went down the Pecos River into Texas, and thence crossed back to Santa Barbara. He intended to return and colonize New Mexico, but his death (probably in 1585) ended these plans; and the only important result of his gigantic journey was an addition to the geographical and ethnological knowledge of the day. In 1590 Gaspar Castano de Sosa, lieutenant-governor of New Leon, was so anxious to explore New Mexico that he made an expedition without leave from the viceroy. He came up the Pecos River and crossed to the Rio Grande; and at the pueblo of Santo Domingo was arrested by Captain Morlette, who had come all the way from Mexico on that sole errand, and carried home in irons.