You should read some Norse tales. The old Icelandic stories are epic; featuring farmers with swords and arrows wailing on each other. The basic themes are always revenge, usually involving shit like this;
"This man Thorkell fucked my sister, Sif, on the eve of her wedding to another man. I shall now kill Thorkell to avenge her honor!"
"The fuck you didn't! You killed my brother! Now I'm going to fucking kill your brother!"
"Fuck you! Now I'll kil your cousin!"
..And so forth until one side is completely fucking dead. It's awesomely messy and gory.