"Lafayette Bunnell is credited with naming Yosemite Valley, based on his interviews with Chief Tenaya. Bunnell wrote that Chief Tenaya was the founder of the Ah-wah-nee colony. Bunnell falsely believed that the word "Yosemite" meant "full-grown grizzly bear." In fact, "Yosemite" was derived from the Miwok term for the Ahwaneechee people: yohhe'meti, meaning "they are killers"."
https://en.wikipedia.org/wiki/Yosemite_National_Park
Boy, he was off by a lot, lol.