Was some outdoor .. So I'm guessing it's an S1..? Still stoked .. Was some great smoke none the less ..Being it's from seed you found in GG#4...
NO it's not Gorilla Glue.
At best it's an S1 of GG#4 but more than likely its a cross from stray pollen floating around somebodys grow room.
The ONLY way to obtain GG#4 is to get a legit cutting/clone from a known reputable source. GG#4 is a clone only cultivar, not a seed line.