Here's a neat little site I discovered years ago, which can tell you how many people in the United States have any particular name. Put in your name(s) and see what happens:
It turns out there are 4 people in the USA with the name "Martin Ingham," so that leaves 3 others out there with my name. That's one reason I use the middle initial "T" so I'm not mistaken for one of those other guys. That, and there is a pretty popular car dealer in the UK called Martin Ingham, as well. Research has shown that there are a lot more people with my name outside the USA (particularly in the UK).