Matilda Jones was swimming around Dozmary Pool in Bodmin Moor, Cornwall, on Tuesday, when she caught sight of the shining metal beneath the water's surface, The Sheffield Star reported.
According to some interpretations of the legend of King Arthur, the owner of Excalibur is the rightful monarch of England. After he lost the sword in the Battle of Camlann, Arthur was mortally injured and upon his death a knight hurled it into the lake. Paul, her father, recounted the discovery, saying, "I told her not to be silly and it was probably a bit of fencing, but when I looked down I realised it was a sword. It was just there lying flat at the bottom of the lake".
He added that the weapon is 4 feet long, "exactly Mathilda's height".
According to one version of the ancient story, Excalibur was presented to him by the Lady of the Lake.
FWIW, legend has it that Dozmary Pond was the spot where King Arthur was first handed Excalibur by the Lady of the Lake.
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After three attempts, his loyal follower Bedivere cast it into the water and the Lady of the Lake's arm rose to receive it.
Matilda, just like the legend she may have uncovered, shares her name with another legendary character from the start of the second millennium.
Coincidentally, Matilda shares the name with a famous English queen, who was heir to the throne of England in the 12th century.
But as with all good yarns, there must be a twist and Jones believes the sword is actually only about 20-30 years old and probably an old film prop. That's something worth celebrating, and really, I think we're all just happy about the idea of a young girl ruling an entire kingdom.