"Sacra gentilicia" were the private rites (see "sacra" above) that were particular to a "gens" ("clan"). These rites are related to a belief in the shared ancestry of the members of a "gens", since the Romans placed a high value on both family identity and commemorating the dead. During the Gallic siege of Rome, a member of the "gens Fabia" risked his life to carry out the "sacra" of his clan on the Quirinal Hill; the Gauls were so impressed by his courageous piety that they allowed him to pass through their lines. The Fabian "sacra" were performed in Gabine dress by a member of the "gens" who was possibly named a flamen. There were "sacra" of Minerva in the care of the Nautii, and rites of Apollo that the Iulii oversaw. The Claudii had recourse to a distinctive "propudial pig" sacrifice "(propudialis porcus", "pig of shame") by way of expiation when they neglected any of their religious obligations.