Heh. I was thinking of the countless First Citizens of Rome.

But yes, according to Wikipedia, Caesar Cardini, an Italian immigrant to Mexico, opened a restaurant in Tijuana, aptly named Caesar's, and the salad was one of the specials created there.

And that's news to me. As a kid, I was told the creation of Caesar Salad was commissioned by Caesar's Palace, a (once) well-known casino in Las Vegas.