The answer to my last message was a resounding "Ars Magica".
I'm happy about this because I had some of my best fun with Ars Magica back in the 90s. The campaign of Y Draig Goch, a Covenant in the Stonehenge Tribunal, dominated by the Tremere magus, Callistratus, and a rag-tag group of junior Magi, Consors and surly Grogs. The main sourcebook I used for this was Pendragon "Beyond The Wall".
Stefan Barbarossa, Bjornaer Magus
Sheridan of the Imposing Beard and Piercing Stare, Grog Sergeant
Randle - "I'm just a cook"
But we're starting a new game. I still like the idea of being 'hunted' so that will be a theme as the players want to play in the Transylvania Tribunal, there are some leads already. There's really no comparison between Wales and Transylvania. Luckily I have a few more books on Transylvania.
Yes, they're for "Vampire: The Dark Ages" but what would Transylvania be without some sort of concession to vampires? And it seems to be the only Mythic Europe tribunal that hasn't been covered by some sort of sourcebook.