@JoeyPals I have a spreadsheet with a timeline I made using each sims age to pinpoint where that world would be placed. Griffin can be their younger brother, and he would be around the age of Holly Alto I if he was in Sunset Valley. He's not the son of any of them, cuz he would be 2 days way to become a teenager and he's not seen anywhere living with Nick in SV nor with Bert in Hidden Springs.
If he's not their younger brother, living with their older parents in another world during Sunset Valley/Hidden Springs, then he's the son of another unknow brother.
Anyway, I didn't made up my investigation. I actually did investigate and made spreadsheets and all of that. The only thing that could "break" this theory is that Sims 4 is an alternate timeline, but as I said I like to ignore this and "fix" some of the "mistakes". haha
