Who are king arthur, the knights of the round tale and guinevere?

Guinevere was the wife of King Arthur, the legendary ruler of Britain. She was a beautiful and noble queen, but her life took a tragic turn when she fell in love with Lancelot, one of Arthur's bravest and most loyal knights.

King Arthur was a King in English/Welsh legend. He inherited the throne from his father Uther Pendragon and was the King of Camelot. Quinevere was his wife. The knights of the round table were Arthur's top knights who protected camelot against the evil forces of Mordred and Morgana Le Fay

Fief

Explanation:

Fief was a unit of land that was granted, to a certain person in exchange to military service, the Fiefs were granted by the feudal lords to certain knights  that were loyal to the feudal lord in promise of fighthing for them in wars to come.