Carnwennan ("Little White Hilt") was the dagger of King Arthur in the Welsh Arthurian legends.
[1] In the Welsh Triads, Carnwennan is listed alongside Arthur's spear Rhongomyniad and Arthur's sword Caledfwlch as sacred weapons given to him by God: "the sacred weapons that God had given him: Rhongomiant his spear, Caledfwlch a sword, and Carnwennan his dagger" (Bromwich's translation).
Geoffrey of Monmouth's Historia Regum Britanniae excludes it, though it mentions the sword Caliburn (a Latinization of Caledfwlch) and the lance Ron (likely an abbreviation of Rhongomyniad).
In Thomas Malory's Le Morte d'Arthur, Arthur has a dagger which he uses to kill a giant, but it is not named.
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