It is uncertain whether her name, Postuma, was a praenomen or cognomen, as the usage of the name Postuma as a female praenomen is unattested in epigraphical evidence for the Roman Republic period but it would have been unusual to give a cognomen at such an early date.
[3] Her birth was highly significant, as it unified Sulla's family with that of her mother's.
[4] She had three surviving older half-siblings – Cornelia Silla and the twins Faustus Cornelius Sulla and Fausta Cornelia – as well as a half-brother who died young.
Her oldest sister, Silla, had already had children by the time Postuma was born.
[7] In Colleen McCullough's book Fortune's Favourites Postuma's mother Valeria expresses doubt that she is actually Sulla's child, believing that she was instead fathered by her lover Metrobius.