Historian Nicholas Rogers, exploring the origins of Halloween, notes that while "some folklorists have detected its origins in the Roman feast of Pomona, the goddess of fruits and seeds, or in the festival of the dead called Parentalia, it is more typically linked to the Celtic festival of Samhain (pronounced sow-an or sow-in)", derived from the Old Irish Samuin meaning "summer's end". Samhain was the first and by far the most important of the four quarter days in the medieval Irish calendar and, falling on the last day of Autumn, it was a time for stock-taking and preparation for the cold winter months ahead.There was also a sense that this was the time of year when the physical and supernatural worlds were closest and magical things could happen. To ward off these spirits, the Irish built huge, symbolically regenerative bonfires and invoked the help of the gods through animal and perhaps even human sacrifice.
Halloween is also thought to have been heavily influenced by the Christian holy days of All Saints' Day (also known as Hallowmas, All Hallows, Hallowtide) and All Souls' Day. Falling on November 1st and 2nd respectively, collectively they were a time for honoring the Saints and praying for the recently departed who had yet to reach heaven. By the end of the 12th century they had become days of holy obligation across Europe and involved such traditions as ringing bells for the souls in purgatory and "souling", the custom of baking bread or soul cakes for "all crysten [christened] souls".
In Britain the rituals of Hallowtide and Halloween came under attack during the Reformation as protestants denounced purgatory as a "popish" doctrine incompatible with the notion of predestination. In addition the increasing popularity of Guy Fawkes Night from 1605 on saw Halloween become eclipsed in Britain with the notable exception of Scotland. Here, and in Ireland, they had been celebrating Samhain and Halloween since the early Middle Ages where it is believed the Kirk took a more pragmatic approach towards Halloween, viewing it as important to the life cycle and rites of passage of local communities and thus ensuring its survival in the country.
North American almanacs of the late eighteenth and early nineteenth century give no indication that Halloween was recognized as a holiday. The Puritans of New England, for example, maintained strong opposition to the holiday and it was not until the mass Irish and Scottish immigration during the 19th century that the holiday was introduced to the continent in earnest. Initially confined to the immigrant communities during the mid-nineteenth century, it was gradually assimilated into mainstream society and by the first decade of the twentieth century it was being celebrated coast to coast by people of all social, racial and religious backgrounds.
Origin of name
The word Halloween is first attested in the 16th century and represents a Scottish variant of the fuller All-Hallows-Even ("evening"), that is, the night before All Hallows Day. Although the phrase All Hallows is found in Old English (ealra hālgena mæssedæg, mass-day of all saints), All-Hallows-Even is itself not attested until 1556.
This is part of the history of Halloween, // Wiki.
I wish you all a pleasant stay at the feast tonight!