A member of the plebeian gens Junia, his father was Decimus Junius Brutus Callaicus and his mother was a Clodia, either from the Pulchri or Marcelli.
[1][2] He was one of the young nobles who fought against Lucius Appuleius Saturninus and killed him and his followers in the Curia Hostilia.
[7] Neither Junius Brutus nor his consular colleague accepted a proconsular command in Hispania to help Quintus Caecilius Metellus Pius in the Sertorian War.
[8] In 74 BC, Junius Brutus put up his lands for security on behalf of a relative who was brought up on charges before Verres, the praetor urbanus.
Historian Ronald Syme proposed that Brutus may have been married to another woman before Sempronia, a Postumia who could have been a sister of the wife of Servius Sulpicius Rufus, he states that it is possible that this Postumia could have been Decimus Junius Brutus Albinus mother instead of Sempronia.