Parentalia

In ancient Rome, the Parentalia (Latin pronunciation: [pa.renˈtaː.li.a]) or dies parentales (Latin pronunciation: [ˈdi.eːs pa.renˈtaː.les], "ancestral days") was a nine-day festival held in honor of family ancestors, beginning February 13.

Although the Parentalia was a holiday on the Roman religious calendar, its observances were mainly domestic and familial. The importance of the family to the Roman state, however, was expressed by public ceremonies on the opening day, the Ides of February, when a Vestal conducted a rite for the collective di parentes of Rome at the tomb of Tarpeia.