Quintus Plautius, consul in 36, was his younger brother. His sister Plautia has been identified as the wife of Publius Petronius, consul in 19; the marriage is attested in an inscription. The daughter of Plautia and Publius Petronius, Petronia, married Lucius Vittelius, later emperor during the Year of Four Emperors.. He married Pomponia Graecina, whom Birley has identified as the daughter of Gaius Pomponius Graecinus, suffect consul in 16. After the execution of her kinswoman Julia Drusi Caesaris by Claudius and Messalina, Pomponia remained in mourning for forty years in open and unpunished defiance of the emperor. In 57 she was charged with a "foreign superstition", interpreted by some to mean conversion to Christianity. According to Roman law, she was tried by her husband before her kinsmen, and was acquitted. There are no attested children of this marriage; though it has been suggested that a later Aulus Plautius, alleged to be the lover of Agrippina the younger, may have been their son. However, some modern historians, such as Birley, have suggested that, despite the shared name, this Aulus Plautius is the son of Aulus Plautius' brother, Quintus Plautius  Aulus Plautius was the uncle whose "distinguished service" saved his nephew Plautius Lateranus, (another son of Quintus Plautius) from execution in AD 48 after his affair with Messalina was discovered; though Lateranus was removed from his senatorial position and exiled instead. . Lateranus was later executed for his involvement in the Pisonian conspiracy against Nero in AD 65; from which it is concluded that his Uncle Aulus Plautius was by that time deceased. Plautius is a character in Henryk Sienkiewicz's novel "Quo Vadis", and in Simon Scarrow's novel "The Eagle's Conquest". In the 1951 film "Quo Vadis", based on Sienkiewicz's novel, Plautius (played by Felix Aylmer) and his wife Pomponia are (ahistorically) Christians. He is played by David Morrissey in the 2018 TV series "Britannia", which portrays a fantasy version of the Roman conquest.