Hello Kid Gloves and thanks for replying!
Yes, of course I'm interested. I've digged everything I could find in the books I own, but some new addition would be very welcome. Also because I have decided that one of the five covenants already founded in the Rhine tribunal, Rethra, is at the moment a Flambeau only covenant. Given the different worldviews between the founder and Apromor, the latter has decided to move out and find a new home in Pomerania: a land rich with pagan magic-users ready to be killed or persuaded. This covenant also serves to bring some tension in the area, since it's between Crintera and Fenistal.
So yes, I'll probably buy a digital copy of F&F, thank you for the advice.
This is really interesting! Since Carloman is always treated as a side note in Charlemagne's rise, I haven't considered to use him. But you are right, it could be a source of intrigue (there's never enough of those), and I need to take a closer look at this. I have a similar storyline in my plans, though, and I should consider if they both can co-exist.
My idea involves the breed of the Merovingian sorcerer kings, of course (that's less original than choosing Carloman, I know). I found out that according to the Matter of France, the grand-daughter of Clovis wedded the saxon king Brunamont, and their descendants are claiming the frankish throne during the saxon wars. So my idea is that one of the companions is a saxon boy, which secretly descends from the merovingian kings. Ideally he will grow into a leader and a warrior, with the aid of the Jerbiton PC in the role of Merlin, and one day he will challenge Charlemagne (or his sons) for the frankish throne. Or he will just win independence for his people. Or he will die trying. Maybe.
The conflict between the sacred Charlemagne, with his priests and paladins, against the pagan saxons, with their vitkir and berserkers, will be central in this saga. It is the physical representation of the war between Christ and the gods, between the Dominion and Magic, between the new world and the old one. The Church has not won this war yet, and the Order will have to pick a side. According to canon, Jerbiton has met with Charlemagne in 789 and has obtained a public declaration of tolerance towards "benign magic". But now his natural son (the Jerbiton PC) is aiding the king's enemies. That's a source of conflict inside and outside the Order.