(ooc - I dislike posing actions for other players, but I guess that happens sometimes in play by post if someone can't respond)
Presuming Nestor took the hint and offered to take the conversation to a more private location...
in Greek, addressing Nestor's tablemates generally
"If any of you are of the same rank as the Magester, please join the discussion. The issues to discuss may affect all of us"
(hopefully Kallistae at least also joins us so I'm not introducing myself to only NPCs in Nestor's room)
Once in private, Caput will explain himself. He will present his sigil, identifying himself as a member of the Order of Hermes, Caput ex Flambeau. Given that we're in the Thebes tribunal, he'll continue in Greek rather than Latin.
Before my Hermetic life, I was active in this area as, shall we say, a "Free Merchant". An armed one. Some of my former companions still work here and have recently become affected by the actions of the Prince. As I had wrapped up my business in the Rome tribunal, I decided to come to this area and investigate the problem affecting my business partners. I had intended to make them my turb, and it would be distressing if an overzealous customs official arrested them or sunk their ship.
Imagine my shock when I discovered a nest of court wizards blatantly interfering with mundane affairs! I was in the process of debating whether to take action myself, but I was reluctant to act alone as a mere visitor to this tribunal. I am currently between covenants, and was hoping to find some like-minded magi in Thebes, but until now my attention has been taken up with sorting out my turb. I was delighted to see I am not the only member of the order investigating this serious violation of Hermetic law. The way I see it, they are either of the Order, and in violation of the Peripheral code, or they are not of the order, and must be made the offer to Join or Die.
Perhaps we could join forces Soldales? If, as I assume, you represent a local Theban covenant, I would be interested in an alliance, as temporary or permanent as you prefer. I bring to the table a small but disciplined turb, as skilled at sailing as at combat, some for myself, some small skills in seamanship, wind and wave magic plus mastery of both personal and mass-combat, equally adept against mundane armies or magical monsters. Although you would not know it to look at my disguise, I am actually a Turk, and can operate in Muslim lands as effectively as I can in Christian. I require only a quiet lab with which to study some rituals texts I recently acquired, and the opportunity to help keep the covenant safe from mundane or magical threats.