It looks more like a brand to me. I've never seen a non-burning injury that grew in white hair.
HOWEVER, most places in the US are able to register their brand with their county, not the state. Here in Texas, I can register a brand in my county, and someone else can register an identical brand in the next county over. Doesn't make a ton of sense to me, but that's the way it is.
Also, some folks don't even bother to register their brand.
So, I seriously doubt that you'll be able to find anything about him just based on that.