LEMURIA
The Lemuria (sometimes seen as Lemuralia) was a feast in Ancient Rome in which Romans performed rites to banish ghosts from their home. This festival dates back to the 6th-century B.C.E until about the 3rd century C.E.
THE DATES
Lemuria was held on May 9, 11, and 13. In ancient Rome, where even-numbered days were considered unlucky – this festival of the dead was held on odd-numbered days.
THE ORIGIN
The term lemures or larvae is associated with the notion of unwholesome specters of the restless dead. However, according to Ovid, the term Lemuria is a derivative from Remuria relating to Remus. Ovid in Fasti says this particular rite was established by Romulus to appease the spirit of this brother, Remus, whom he had killed.