Excalibur
Geoffrey of Monmouth, in his "Historia Regum Britanniae" ("The History of the Kings of Britain", c. 1136), Latinised the name of Arthur's sword as "Caliburnus" (potentially influenced by the Medieval Latin spelling "calibs" of Classical Latin "chalybs", from Greek "chályps" ["χάλυψ"] "steel"). Most Celticists consider Geoffrey's "Caliburnus" to be derivative of a lost Old Welsh text in which "bwlch" (Old Welsh "bulc[h]") had not yet been lenited to "fwlch" (Middle Welsh "vwlch" or "uwlch"). In the late 15th/early 16th-century Middle Cornish play "Beunans Ke", Arthur's sword is called "Calesvol", which is etymologically an exact Middle Cornish cognate of the Welsh "Caledfwlch". It is unclear if the name was borrowed from the Welsh (if so, it must have been an early loan, for phonological reasons), or represents an early, pan-Brittonic traditional name for Arthur's sword.
The Kid Who Would Be King
One night, while on his way home, Alex is attacked and chased by Lance and Kaye. Quickly losing them in a construction site, Alex stumbles upon a mysterious sword and immediately removes it from the rubble. However, it gives away his hiding place to the bullies, forcing Alex to seek refuge at Bedders' home. There, much to their excitement and awe, they identify the sword as Excalibur. Meanwhile, a sorceress is awakened and instructs her minions to locate Excalibur.