This was an ancient Roman festival held in honor of the manes, or souls of the dead—in particular, deceased relatives. It began a season for remembering the dead, which ended with the Feralia on February 21. This week was a quiet, serious occasion, without the rowdiness that characterized other Roman festivals. Everything, including the temples, closed down, and people decorated graves with flowers and left food—sometimes elaborate banquets—in the cemeteries in the belief that it would be eaten by the spirits of the deceased. Discuss
Source: The Free Dictionary