Melchior Diaz

Melchior Díaz was an early Spanish explorer of Western North America who "was a hard worker and skillful organizer and leader. He inspired confidence in his companions and followers, and always maintained the best of order and of diligence among those who were under his charge". He was involved in three expeditions associated with the explorations of Francisco Vásquez de Coronado.

He was placed in charge of the town of San Miguel de Culiacán by Nuño de Guzmán. When in 1539, Fray Marcos de Niza returned from Pimera Alta reporting he had seen the fabled cities of Cibola, Viceroy Antonio de Mendoza sent Diaz as the leader of a small expedition preliminarily to determine if reports by Fray Marcos were true. Information he gained was to benefit Coronado's planned and much larger expedition. He departed on November 17, 1539.

When Diaz failed to return at the expected time, Coronado embarked without him in February 1540. Diaz and Coronado met en route, and Diaz joined Coronado's group. Coronado then sent him on his second expedition to locate and investigate some villages reported in the area. He found the villages and reported they did not live up to the grand descriptions that had been given. Diaz was then sent ahead by Coronado to secure feed for the expedition's livestock.

In July, 1540, Diaz was sent to take the now-mistrusted and hated Fray Marcos back to Mexico and (say some reports) to take over leadership of the outpost at San Geronimo (or Hieronimo) in the valley of Corazones and from there to attempt contact with the fleet of Hernando de Alarcon, which was to be the maritime arm of Coronado's expedition. In September, 1540, he began his third expedition, traveling overland to the head of the Gulf of California. Near the confluence of what is now the Colorado and Gila Rivers he learned from the natives that Alarcon had departed, but had left a cache of supplies and correspondence, which he located. The message basically stated that "Francisco de Alarcón reached this place in the year '40 with three ships, having been sent in search of Francisco Vazquez Coronado by the viceroy, D. Antonio de Mendoza; and after crossing the bar at the mouth of the river and waiting many days without obtaining any news, he was obliged to depart, because the ships were being eaten by worms". Diaz crossed the Colorado River, becoming the first person of European background to do so, and named it Rio del Tizon ("River of Embers" or "Firebrand River") from the practice of the natives for keeping themselves warm. He was impressed with the physical strength of the natives of the area. He explored for four days west of the Colorado, perhaps as far as the Imperial Valley.

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