king arthur and his sword

Excalibur is the legendary sword of King Arthur sometimes attributed with magical powers or associated with the rightful sovereignty of Great Britain. Sometimes Excalibur and the Sword in the Stone (the proof of Arthur's lineage) are said to be the same weapon, but in most versions they are considered separate. The sword was associated with the Arthurian legend very early. In Welsh, the sword is called Caledfwlch. There is a myth told that king Arthur took his sword out of stone but the only possible explanation is this:  
The Latin word for sword is saxo; the English word for the Germanic invaders who took over the country is Saxon. It is quite possible that the story of Arthur had him killing a great Saxon leader and taking his sword as a symbol of prowess and renewed vigor and victory.