The crusade of the Spanish knights to drive the invaders out of the country was called the Reconquista.
RECONQUISTA
A group of knights is called a "brotherhood" or an "order."
Knights of the round table.
Spanish Conquestors were basically the knights for Spain because the word means chilvarious
Pieces of land given to knights as payment were called fiefs.
Some knights were called sirs as they were knighted by a king/Queen for different reasons.
The code of conduct for knights is called a Chivalry.
You might be thinking of Pretear. There are these knights called Leafe Knights or something, and they fight against these things called larvae that start out looking like seeds.
Uhhh . . . the Knights of the Round Table?
dowager
Chevalier