Who were the 4 main people that were involved in the Corps of Discovery?

The historical figures were Lewis and Clark, Sacajawea, and her French-Canadian trapper husband. These four and about three dozen others made up the Lewis and Clark Expedition to the American Northwest in 1804-1806. Sacajawea and Charbonneau joined the expedition in November, 1804, in Mandan tribal areas in what is now North Dakota.

Meriwether Lewis (1774-1809)

William Clark (1770-1838)

Sacajawea (aka Sacagawea, Sakakawea), a Shoshone woman (1788-1812?)

Toussaint Charbonneau (1767-1843), married Sacajawea in 1804 (but already had a Shoshone wife)