What is one of the major conflicts in the novel, Blood on the River?

The novel is threaded throughout with class conflict between the English noble gentlemen and the commoners. The gentlemen, who earned their status through blood inheritance, are accustomed to being served and not having to work. The commoners, on the other hand, are accustomed to working hard, though they come from a place where they are not allowed to use weaponry or even learn to read.