King Arthur, a legendary British ruler, is best known for his association with the Knights of the Round Table and his quest for the Holy Grail. The origins of Arthurian legend trace back to early medieval texts, notably Geoffrey of Monmouth's "Historia Regum Britanniae" written in the 12th century, which introduced many of the tales surrounding Arthur and his court. His life is shrouded in myth, with stories depicting him as a noble king who defended Britain against Saxon invaders. The romanticized accounts suggest he wielded the magical sword Excalibur and was guided by the wizard Merlin. Over the centuries, Arthur's legend evolved, inspiring countless adaptations in literature, art, and film. His portrayal as a symbol of chivalry and noble leadership continues to capture the imagination, making him one of the most enduring figures in Western literature and a cultural icon.