Servilia (c. 100 BC – after 42 BC) was a Roman matron from a distinguished family, the Servilii Caepiones. She was the daughter of Quintus Servilius Caepio and Livia, thus the maternal half-sister of Cato the Younger. She married Marcus Junius Brutus, with whom she had a son, the Brutus who, along with others in the Senate, assassinated Julius Caesar. After her first husband's death in 77 BC, she married Decimus Junius Silanus, and with him had a son and three daughters. She gained fame as the mistress of Julius Caesar, whom her son Brutus and son-in-law Gaius Cassius Longinus would assassinate in 44 BC. Her affair with Caesar seems to have been publicly known in Rome at the time. Plutarch stated that she in turn was madly in love with Caesar. The relationship between the two probably started in 59 BC, after the death of Servilia's second husband although Plutarch implied it began when they were teenagers. Source: Wikipedia (en)