Desmond wrote:Friendly notice that I have released a fourth clue.Shouldn't be too hard to find but it'll be fun to see what you guys make of it.
The name of your dressup is now a Tower, or the chess piece, Rook!

The rook represents defense, fortification, and stability.
From https://www.chess.com/blog/AsadmanCollis/the-rook-towering-strength-and-unyielding-dominance-in-chess
The rook, with its majestic movement and unyielding dominance, stands as an emblem of strength and strategic brilliance in the world of chess. Its capacity to control the board, deliver decisive checkmates, and form powerful alliances with other rooks underscores its pivotal role in the game.
Perhaps this is part of what Desmond’s new staff will be like, the Rook! Of course, how the other items tie in are still important, too.
Edit:
Also, looking at the Tower, from https://symbolopedia.com/tower-symbolism-meaning/
The tower is a symbol with dual aspects of protection and isolation. It represents strength, stability, and the ability to watch over and defend against threats from a high vantage point. Conversely, towers also symbolize confinement and the separation of those within from the outside world, as seen in tales where characters are imprisoned in towers.
So this symbolic name could be one, the other, or a combination of both?
Edit 2:
Also, when looking at Desmond’s stamp, I noticed Aiden’s stamp in the corner
Aiden’s marking really reminds me a lot of this pup’s markings
So I really do think this is Desmond’s pup.
Of course, with this new hint, it makes me wonder if, like a Chess Rook, this pup will be like a second Rook, maybe to Aiden, since rooks come in pairs and can work together to corner the king?