The sword belonging to Bevis of Hampton.
Bevis of Hampton was a popular English medieval verse-romance based on an Anglo-Norman original, which tells of Bevis's adventures in Europe and the East, and of his revenge upon his father's murderer.
Middle English; earliest use found in Bevis of Hampton. From Anglo-Norman Morgeley, Morgelei, Murgleie, probably from an unattested Old Breton (or equivalent Welsh or Cornish) compound from mor great (later meur) + clezeff sword (later kleze; from a Celtic base related to Latin gladius sword). See further claymore, which contains the Scottish Gaelic equivalents of these words in reversed order.