I know you visited Gillespie's house in SH1, SH3 and SH Origins, but the house isnt listed on the world map. Where is it exactly do you know? Thanks!
We only actually visit that house in SH Origins (unless you count rooms from the house that appear in Nowhere). I don't know where the house is, but I remember from the view of it we see in the SH1 intro trailer, it looks to be somewhat isolated with a field around it and a creek. So not in one of the regular neighborhood areas.
Thinking about the beginning of Origins, they put it along a road leading into town and although there were still no immediate neighbors, it seemed to be located a bit differently and looked a bit less... ranch-like. I'm not aware if we know exactly what road that was Travis was taking into town when he came to the house. I don't remember a name on the road, just the Welcome To SH sign, and since Travis wakes up later elsewhere, you can't really tell for sure which route he used to arrive, as far as I know.
It's also a matter of which version you'd prefer to be more loyal to: SH1 or Origins.
I think it'll mostly be a guessing game on your part, using what we know as clues.