This is quite a fantastic find! Let me preface my findings by stating that I am horrible at Ancestry searches. But I thought I would give it a whirl
I got some basic stuff to start, at least.
I found several people who go by that name, and another in TX. How sure are you that the October DOB is the correct one? If certain, I really only found two additional records and for one of them, I am not positive it is him. It is a marriage record. He married a 40 yo old with the initials GL on 24 Aug 2004 in Collin, Tx. The only catch is that the record estimates GYF's DOB as 1970. Unfortunately there is no link to the original doc. But I don't think it is too much of a stretch to guess that his age is the same as actually his wife's, which would bring his DOB to 1965. Or perhaps the bride's DOB and the groom's DOB were accidentally transposed. I did find another associated address in Fort Worth for GYF DOB 1965. Can I publish that?
There is a GF who was born in NY 15 days after the aforementioned 1965 GYF. I don't think they are the same person. There are a few records that consistently place him on the E coast.
There is also a GF that was born in 1968-- I see 3 Houston addresses for him, and one for Irbana, IL. Not positive on that DOB-- it could possibly be the same guy. This could possibly be the person on the marriage record too.
There is another GYF that is born in 1975, or around there-- different records say different things. But I saw his university year book photo, and 1975 looks to be close enough. I think this is the one that likely was mixed up into the last record you linked. He is in Kansas. There is quite a bit of evidence linking him to Kansas, at least in the mid 90s.
the following two are kind of interesting....
a GF born 1968, living in Tucson, AZ (different DOB from Houston GF)
and a GF In Vancouver, WA in 1994 and also Redmond, WA. I am not positive they are the same person, just guessing. Vancouver is a couple hours away from Fife, where poor BST passed away. Redmond is about an hour from Fife, 20-30 mins from Seattle. Microsoft is HQd there, and there a big Asian community there.
I dont know know if any of this is helpful-- I am always so worried I will leave out THE detail! Let me know if I can drill down somewhere or clarify.