Balthazar (also spelled Balthasar, Balthassar, or Baltazar), from Akkadian ð’‚—ð’ˆ—ð’‹€ Bel-shar-uzur, meaning "Bel protects the King" is the name commonly attributed to Balthazar (magus), one of the Three Wise Men, at least in the west.
Though no names are given in the Gospel of Matthew, this was one of the names the Western church settled on in the 8th century, based on the original meaning, though other names were used by Eastern churches.
It is an alternate form of the Babylonian king Belshazzar, mentioned in the Book of Daniel.
The Armenian variation of the name is Baghdasar.
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