The origin of the word siskiyou is not known. One version is that it is the Chinook Jargon word for "bob-tailed horse." Another version, given in an argument before the State Senate in 1852, is that the French name Six Cailloux, meaning "six stones," was given to a ford on the Umpqua River by Michel LaFrambois and a party of Hudson's Bay Company trappers in 1832, because six large stones or rocks lay in the river where they crossed. According to some, the Six Cailloux name was appropriated to this region by Stephen Meek, another Hudson's Bay Company trapper who was known for his "discovery" of Scott Valley, in regard to a crossing on the Klamath River near Hornbrook. Still others attribute the name to a local tribe of Native Americans.