Kylie is a relative. He hosts a site by one Kylie Gillette using the alias Whytheluckystiff. If he is NOT Jonathan Gillette he has very, very close ties to him.
Parents divorcing and family members committing suicide._why has written a lot about both topics and the band description matches up with his tastes and quirkiness quite well I think. So Kylie is in fact JGs wife.
And here we are: Miss Trudy (who I definitively know being _why's wife, as I uncovered this some years ago, and _why asked me to not say anything), is definitively saying she belongs to "The Child Who was ..." :
This thread, combined with others combined with the javuh repository on sourceforge combined with all of the friend hosting create enough to bear it out. So there we have it.
Another hint, perhaps going in the same direction: this thread (http://listlibrary.net/ruby-talk/2002/06/00iG41gy) on ruby-talk, where Jonathan Gillette is both using the wgy@riza account and another one ...