Speculation
Please do not put speculation in articles, particularly anything that is completely unconfirmed such as Uncle Grimmley's relation to other ghosts. Also, if something was removed, you should look at the edit history to see why. 
Nightwicked Bowser 
16:13, November 17, 2022 (EST)
Well why else would he be called Uncle Grimmley? User:Cokeman75 16:13, November 17, 2022 (EST)
- Doesn't necessarily mean he has to be related to any other characters in the game. Nightwicked Bowser 16:19, November 17, 2022 (EST)
Well he resides up on the first floor with all the family ghosts (Neville, Lydia, Chauncey, Henry and Orville). Wouldn’t that make sense that he’s related to them? User:Cokeman75 16:18, November 17, 2022 (EST)