William Henry Ashley (c. 1778 – March 26, 1838) was an American miner, land speculator, manufacturer, territorial militia general, politician, frontiersman, fur trader, entrepreneur and hunter.Before the war, he did some real estate speculation and earned a small fortune manufacturing gunpowder from a lode of saltpeter mined in a cave, near the headwaters of the Current River in Missouri.Jedediah Smith's party, part of Ashley's Hundred, were officially credited with the American discovery of South Pass in the winter of 1824.Ashley devised the rendezvous system in which trappers, Indians and traders would meet annually in a predetermined location to exchange furs, goods and money.His innovations in the fur trade earned Ashley a great deal of money and recognition, and helped open the western part of the continent to American expansion.