When you wrote the Grail Quest series in your research did you come across any sources for the Holy Roman Empire? I mention HRE because the Crossbow Men who fought for the Frecnh came from one of countries under the rule of HRE. It amazed me that The HRE didn't take more of active role in the Hundred year war then sending those Crossbow men. Vanguard
I guess because the HRE didn't have a dog in that quarrel - which was a fight between England and France over territory that was a long way from the Holy Roman Empire - and the Genoese crossbowmen were all mercenaries, so fought for whoever paid them - they weren't sent by the Emperor, but hired by a paymaster. I'm sure the HRE took advantage of the war! Best read Jonathan Sumption's marvellous two volume history to discover more.