Premise: Left Hand Spring was a well-known watering stop on the old Chisholm Trail in present-day Blaine County, Oklahoma. The spring was named for "Left Hand", an Arapaho chief. Jesse Chisholm died there in 1868 and is buried nearby. His grave is marked with a granite historical marker.
Hypothesis: The spring was going to be named after another person, before the Arapaho chief was decided on.