Octavia was pregnant when she married Mark Antony in 40, and it is likely that the child was Marcella Minor - but this is not a certainty. If so, Marcella was born after the death of her father and she grew up part of the first post-Actium generation. Her full siblings were older sister Claudia Marcella Major and her only surviving brother Marcus Claudius Marcellus. From her mother's second marriage to Mark Antony she would also gain two half sisters, Antonia Major and Antonia Minor.