Hugh Glass (c. 1780–1833) was an American fur trapper and frontiersman noted for his exploits in the American West during the first third of the 19th century.Glass was born in Pennsylvania, to parents who were from Ireland of Scottish descent. He was an explorer of the watershed of the Upper Missouri River in present-day North Dakota, South Dakota and Montana. Glass was famed, most of all, as a frontier folk hero for his legendary cross-country trek after being mauled by a grizzly bear.