I'm looking for something that would mark a person as a peasant or a farmer's son, as opposed to someone more cosmopolitan/educated (i.e. someone from a respectable samurai family).
It could be anything, really...a certain superstition or belief, a preference for a certain type of food/drink, anything. (An accent probably wouldn't work because a) hard to translate and b) speech patterns are already dictated by the fandom)
(If all else fails, I may just go for observance of a harvest festival or something, but I'm hoping someone might have more knowledgeable/detailed/interesting suggestions. Heck, if anyone knows what might mark someone as a country bumpkin in modern Japan, tell me; it might be applicable for back then too.)