What you will get in This Halloween HD Wallpaper App? free halloween wallpaperhalloween backgroundhalloween wallpaper hdfree halloween wallpaperkawaii halloween wallpaperhalloween live wallpaperStraddling the line between fall and winter, plenty and paucity, life and death, Halloween is a time of celebration and superstition. It is thought to have originated with the ancient Celtic festival of Samhain, when people would light bonfires and wear costumes to ward off roaming ghosts. Ancient Origins of Halloween. Halloween's origins date back to the ancient Celtic festival of Samhain (pronounced sow-in). The Celts, who lived 2, 000 years ago in the area that is now Ireland, the United Kingdom and northern France, celebrated their new year on November 1. Halloween is the evening before the Christian holy days of All Hallows' Day (also known as All Saints' or Hallowmas) on 1 November and All Souls' Day on 2 November, thus giving the holiday on 31 October the full name of All Hallows' Eve (meaning the evening before All Hallows' Day).