Halloween’s origins dates back to the ancient Celtic festival of Samhain (pronounced Sow-in). The Celts, who lived 2000 years ago, mostly lived In the area that is now Ireland, the United Kingdom and Northern France, celebrated their new year on November 1st. This day marked the end of summer and the harvest and the beginning of the dark, cold winter. Celts believed that on the night before the new year, the boundary between the world of the living and the departed became blurred and on the night of the 31st October they celebrated Samhain.
To commemorate the event, Druids built huge bonfires and Celts wore costumes. Over time Halloween evolved into a day of activities like carving jack-o’-lantern, festive gathering, donning costumes and eating treats.
Publisher: A&E Television Networks at History.com
This is how Karrinyup commemorated the history of Halloween below.