forest, also Sherwood forest: Scene of much of the book's action, this forest lies between Sheffield and Doncaster. It is full of yeoman and outlaws, most of whom have been oppressed by forest laws. These laws prohibit certain groups from hunting, greatly hurting the Saxon and other lower classes' way of life.
vassals: A tenant of a noble, a vassal has vowed obedience the noble in exchange for protection. They are considered a lower class. Prince John allowed for the increase of vassals and vassalages in his brother's absence. Rich and powerful nobles turned their weaker neighbors into vassals, greatly disrupting and disturbing the country.
language: One of the strong clashes between Norman and Saxon is through language. The Normans considered the Saxon dialect unintelligent, and the Saxons understandably resented this. The Norman language was considered the height of intelligence and chivalry, and was used in the courts. Language formed a strong barrier between the two groups, with only some on each side willing to speak the dialect that mixed the two languages.
Templar: A Knight of this religious and military order. They fought for Jerusalem and the Holy Sepulcher. In the absence of their leader, the members of the order strayed from all of their vows, including chastity and poverty. Bois-Guilbert is one of their members.
Torquilstone: Front-de-Boeuf's castle. This is where Bois-Guilbert imprisoned Rebecca, and where the Saxon prisoners were brought. The outlaws, aided by an old sibyl, defeat the castle's forces, and it burns to the ground.
Castle of York: The site where Prince John collects his followers near the end of the novel. It is there that he learns of Front-de-Boeuf's death, and his brother's return. Here he and Fitzurse hatch the plan to capture Richard, and possibly kill him.