Hi William. It does have significance -- the number is a unique identifier for each profile and determines how you designate it or link to it. But I think what you're seeing is multiple different variations of the same surname. I.e., the software thinks St.Clair, St. Clair, St Clair, Saint Clair are different surnames. It matters if there's a period after St. or a space between St and Clair, and if Saint is spelled out or abbreviated. (And I'm not sure if capitalizing would be interpreted as a different name.) But anyway, you have a surname with a half dozen or so possible variations that all look different to the computer.