Rosemary Sutcliff 
The Sword And The Circle 
King Arthur and the Knights of the Round Table

Rooted in folklore, medieval ideals of chivalry, and the last gallant strugglesof the British against the Saxon invaders, the legends of King Arthur have been told in song and story since the middle ages.
The Sword and the Circle tells of the birth of Arthur, the gift of Excalibur, the forming of the Round Table and the first noble quests of its knights until the arrival of Percival . . .