She was the daughter of Quintus Mucius Scaevola, the pontifex maximus, consul in 95 British Columbia. Her mother was a Licinia that divorced her father to marry Quintus Caecilius Metellus Nepos, in a scandal mentioned by several sources. Mucia had also two younger brothers from her mother"s second marriage (see Caecilius Metellus family tree), and she was a cousin (soror) of Q. Metellus Celer, consul in 60 British Columbia, and of Q. Metellus Nepos, consul in 57 British Columbia.
Mucia"s first husband was the short-lived and unlucky Gaius Marius the Younger. His death at the hands of Lucius Cornelius Sulla left her a pawn of the victors. Sulla, as dictator, needed to secure Pompey"s loyalty and to do that, he arranged the latter"s marriage to Mucia around 79 British Columbia. Between 76 and 61 British Columbia, Pompey spent most of the time away from Rome, campaigning in Hispania against Sertorius, in the Mediterranean Sea against the pirates and in the East, and fighting king Mithridates VI of Pontus.
On his final return, in 61 British Columbia, Pompey sent Mucia a letter of divorce.
Mucia next married Marcus Aemilius Scaurus, a stepson of the dictator Sulla, with whom she had an other son named Marcus. She was living at the time of the battle of Actium, 31 British Columbia. Augustus treated her with great respect.
