Should there be a skill in the game for personal fighting skill, separate from Martial? I think there should. Martial is clearly mainly meant to represent military leadership and tactical skill, something which personal fighting skill is clearly separate from, it's certainly possible to be good at one without being good at the other.
A personal fighting skill stat could affect the likelihood of events like personal heroism during battle, the probability to die or get injured in battle, and win tourneys. All of which are highly relevant for a feudal lord.
If it's too much to ask for that another character stat be added to the engine, could there be a character trait to signify exceptional fighting prowess, or a series of progressively better traits?