She was from the gens Marcia who were of plebeian status,[1] claiming descent from the Roman king Ancus Marcius.

She was a daughter of Roman Senator Quintus Marcius Barea Sura and Antonia Furnilla.

Her sister was Marcia, the mother of Ulpia Marciana and of future Roman Emperor Trajan.

Titus didn't want to be connected with any potential plotters and ended his marriage to Furnilla, but continued raising their daughter.

After her death, she was placed along with her mother in the mausoleum of Gaius Sulpicius Platorinus - a magistrate at the time of the first Roman Emperor Augustus - and his sister Sulpicia Platorina in Rome.