Up until recently, I thought that the US national park was pronounced "yo-semite", as if it was some sort of ghetto-slang used for greeting a Jewish person.
There was an '80s cop show called Hill Street Blues that had a recurring latino character named Jesus. All I heard as a kid was "Hey, Zeus" so I thought his actual name was Zeus and everybody just said "hey" to him when addressing him.
I thought Yosemite Sam had pretty much taught all English speakers the correct pronunciation. I remember my parents saying their Swedish relatives pronounced it "Yohsmeet."