My family's current spelling of my last name comes up with about 300 people. The original spelling comes up with about 450. It's ethnic and uses a sound that isn't really in English. Due to that, my family made it worse over time by shifting to a pronunciation that doesn't match anyone's reading of the name.

It's always misspelled, misheard, and mispronounced, but I've never minded. It's more a source of amusement than annoyance or inconvenience. I can't imagine ever changing it.