Calling Fidel Yzageirre

My catch-all email box for tetrap.com seems to have exploded with spam. Usually it has a couple of dozen emails for people at tetraps.com, where the sender missed the S off, plus some hopeful spam sent to the webmaster address. But when I checked today, there were 170 messages, mostly spam, directed at one Fidel Yzaguirre. Google and Yahoo have two results for that name, but neither is of much help. The email address in question doesn't come up in a search on either engine...

Who is this mysterious Fidel Yzageirre, and why do dozens of spammers think he has a valid email address on my domain? Strange!