Sacagawea's Child follows the life of Jean-Baptiste Charbonneau, a boy born at the forefront of westward expansion in the early nineteenth century. Author Susan M. Colby details Charbonneau family history, analyzing the characters and cultures of Jean-Baptiste's father, Toussaint, a French fur trader, and Sacagawea, his Shoshoni and Hidatsa mother. By turns a mountain man, interpreter, guide, hotel operator, and gold miner, "Pomp" remained on the western frontier nearly all of his life. This first complete biography offers historians and general readers a thought-provoking study of this unique American and the cultures and times that molded him.