First off, note that you have donations set to "pass" meaning you skipped your cut and it all went to Xepher.net itself. If you already knew that and intended it, then ignore me. I just always point that out if someone starts asking about donations, in case they weren't clear on it.
As for "who" I never setup any record keeping for that, so it's not recorded by the system at all. I do, however, have the emails I received from paypal, and I could probably grep through those to find the ones matching your account. I'll have to do it by hand, so send me an email asking for it, and that'll remind me next time I'm sorting through mail (and make it easy for me to remember/find your address.)