The center of this ceremony should be Aleister.
Aiwass was brought here thanks to the special connection with Aleister... and everyone else should also have some sort of direct or indirect relation to Aleister, with most of them being Stibnite.
Now Stibnite is in total disarray, and there's a fire burning between them.
And with the memories previously passed on by Aleister, Aiwass was able to confirm the identities of these people.
The old mage should be from the Narcissus Duchy. He is the only one among all present who carries his main-hand weapon - this means that he crafted the magic wand himself. Aside from Aiwass and Aleister, he should be the strongest here.
...And the one in ragged attire should be "Clown Laro" mentioned by Prince Xiyaldo.
He is one of the most trusted court jesters by Valentine VII, a rare sage in the court.