Pedro (aka Pierre) Vial was a French explorer and frontiersman who lived among the Comanche and Wichita Indians for many years. He later worked for the Spanish government as a peacemaker, guide, and interpreter. He blazed trails across the Great Plains to connect the Spanish and French settlements in Texas, New Mexico, Missouri, and Louisiana. He led three Spanish expeditions that attempted unsuccessfully to intercept and halt the Lewis and Clark Expedition.
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