User blog comment:DarkSuicune2000/Goth Family Ghosts From The Sims 1./@comment-27462743-20160310093739

That's one interesting theory! However I think all of the ghosts are from Bella's/Cassandra's side of family/point of view. Cousin is literally, a cousin (from Cassandra's point of view), so he could be the older brother for Bratty and Boy, and Grandpa is Bella's Grandpa (Milton) instead of Cousin, they dress similar, and we should not focus on skintones because I doubt that EAxis thought of connecting hem to family members from other games. Whatever, Vegas seems out of place with the Bachelor/Goth members, so I believe he is a family friend, who used to be quite close to Mortimer (Somewhere between TS3 and TS1 timelines, after Morty's teenage years and before he started a family, which means he would have been in his early/mid 20s when he befriended him, and Vegas died before Cassandra's birth but after Morty's marriage. And as I think, he was very close to the Goths apparently and got the treatment of a family member from Morty and Bella, which explains the reason he is buried there. So basically, all the family members buried in the Goth house (Bella's and Morty's generation) are from Bella's side/Cassandra's point of view, and all the family members buried in the second Goth house from Unleashed (Gunther and Cornelia's generaion) are from Morty's side.