Fort Sarpy (1)
Fort Sarpy (1) (1850-1859) - Established 1850 as an American Fur Company fur trading post and named after John R. Sarpy, a partner in that company. Abandoned and burned in 1859. Replaced by Fort Sarpy (2).
Constructed in 1850 on the north bank of the Yellowstone River, just below the mouth of the Rosebud River, in present-day Rosebud County. This fortified Crow Indian trading post was established by Alexander Culbertson of the American Fur Company and named for John B. Sarpy, a Company partner.
Fort Sarpy was said to have a 100-foot square stockade of fifteen-foot-high pickets. In May 1855, the Company abandoned and burned Fort Sarpy (1) indicating that it was "badly forted" and replaced it with Fort Sarpy (2), south of the Yellowstone River in 1859. Coordinates below are based on this description and are approximate.