Variant of Jasper, traditionally linked to Persian 'gasbar' meaning treasurer or keeper of treasure.
Casper is a form of the older name Gaspar or Jaspar, usually traced to Persian roots meaning "treasurer" or "keeper of the treasure." The name traveled westward through Christian tradition and became attached to one of the Three Magi, though the Bible itself does not name the wise men; their familiar names emerged later in legend and medieval devotion. As the name spread across Europe, it took on local forms such as Kaspar, Gaspard, Jasper, and Casper, each shaped by regional pronunciation and spelling habits.
Its cultural history is unusually broad. In Christian art and folklore, Casper or Caspar became one of the kings who followed the star to Bethlehem, giving the name a noble and festive quality. In intellectual history, it appears in figures like the Swiss physician and alchemist Paracelsus, born Theophrastus von Hohenheim, whose father was named Wilhelm Bombast von Hohenheim but whose wider era helped preserve names like Caspar in German-speaking lands; more directly, one thinks of the painter Caspar David Friedrich, the great Romantic artist of moonlit landscapes and spiritual solitude.
For many modern English speakers, however, the strongest association is Casper the Friendly Ghost, a twentieth-century cartoon character that softened the name into something gentle, whimsical, and childlike. That range of associations has shaped its changing perception. Once stately and old-world, then quaint or even comic in some places, Casper has in recent decades been reconsidered as a charming vintage choice. It now feels warm, literary, and slightly ethereal, balancing ancient prestige with a friendliness that few old names can claim so completely.