I have removed the name from my original post, to protect his privacy.
Basically, he was a customer who made a relatively small purchase from me a year ago, paid for it, and then the package was returned as 'address unknown'. I have been unable to get a response from him via email and his ebay i.d. is now defunct. Fortunately it was some inexpensive autographs.
Same thing happened with a box of comic books. I have both packages sitting in a corner...annoying me.