John Potts (born about 1776 in Dillenburg[1] † 1809 at the banks of the Jefferson River) was a member of the Lewis and Clark Expedition.
In 1809, another altercation with the Blackfoot resulted in John Potts' death and Colter's capture.
While going by canoe up the Jefferson River, Potts and Colter encountered several hundred Blackfoot who demanded they come ashore.
Potts in his turn shot one of the Blackfoot and died riddled with arrows fired from the shore.
[2] A rock on the Martian Endeavour Crater was named for Potts.