<Tr> <Th> Type </Th> <Td> Magic sword </Td> </Tr> <Tr> <Th> Element of stories featuring </Th> <Td> King Arthur </Td> </Tr> <P> Excalibur, or Caliburn, is the legendary sword of King Arthur, sometimes also 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 . Excalibur was associated with the Arthurian legend very early . In Welsh, it is called Caledfwlch; in Cornish, Calesvol; in Breton, Kaledvoulc'h; and in Latin, Caliburnus . </P> <P> The name Excalibur ultimately comes from the Welsh Caledfwlch (and Breton Kaledvoulc'h, Middle Cornish Calesvol) which is a compound of caled "hard" and bwlch "breach, cleft". Caledfwlch appears in several early Welsh works, including the poem Preiddeu Annwfn (though it is not directly named - but only alluded to - here) and the prose tale Culhwch and Olwen, a work associated with the Mabinogion and written perhaps around 1100 . The name was later used in Welsh adaptations of foreign material such as the Bruts (chronicles), which were based on Geoffrey of Monmouth . It is often considered to be related to the phonetically similar Caladbolg, a sword borne by several figures from Irish mythology, although a borrowing of Caledfwlch from Irish Caladbolg has been considered unlikely by Rachel Bromwich and D. Simon Evans . They suggest instead that both names "may have similarly arisen at a very early date as generic names for a sword"; this sword then became exclusively the property of Arthur in the British tradition . </P>

What was the sword in the stone called
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