I was surprised to find that you can map any current combination of forename and surname in the USA through the White Pages website:
http://names.whitepages.com/Minnesota
You may wish to try it for your own name. Apparently there are 228 people with the name Keith Johnson in Minnesota - and the name most commonly occurs in California (2,193) and Texas (1,621).
Seems that I gained some anonymity when my grandfather changed the family name from Shorrocks to Johnson. I can't find a single Keith Shorrocks!
