Life's too short to worry when people get this kind of thing wrong. But it's a bit irritating when people correct you when you tell them your name.

"What's the name?"
"McGrath" (pronounced to rhyme with "bar")
Puzzled expression - and then "Oh you mean McGrath" (rhyming it with "bath")
I feel like replying "No I don't" - but as I said, life's too short. And when you've got a seven letter name with the one vowel, I suppose you have to make allowances.