Looking over my notes, Frederic either volunteered, or was volunteered due to speaking French. Gustav of course is going with him. David is a good choice to accompany; he has both French and a good bargain skill. Patrice is a second best is David is unavailable; she also has French and bargain, abeit at slightly lower levels. Finally Henri also has French but does not have bargain, making him a distant third choice.
The only one of these I'm playing is Patrice, so of course she needs to go to Normady to get some doodads in preparation for the wedding!
The other Tribunal we were planning on attending was Rome; I have Talus, Pallas and Oderisi going.
We discussed this in greater depth and with possible additional volunteers, but I can't find the thread. I recall both parties were going to travel by ship, first to Marseilles, then to Italy. Each party gets one of the Janus tablets so they can communicate with each other (but not with Domus Aureus) to avoid duplication of effort.