I've come to think the fact, that actually the peasant rebellions in
our own world were rarely just peasant rebellions. There were quite
often some one or some ones from the higher class behind the rebells.
For example replaced king might have tried to get his crown back with
the help of a peasant rebellion. Also peasant rebellions were often
used as help for a noble to gain more power. So im that way peasants
surely might have gained better weapons, even swords.
I see then the possibility for this kind of a peasant rebellion in
Seshnela too. I wonder if the nobles used peasants help when he
decided to object king Guilmarn's claim for their land. Or were the
peasant caste of Seshnela loyal to the king? I don't know much about
kings politics and I am not sure if there even were any violent
objections against him.