She was the mother of the Roman general Marcus Plautius Silvanus (consul in 2 BC), who had distinguished himself when fighting with the future Emperor Tiberius during the Great Illyrian Revolt in the Balkans.
She was the grandmother to Plautia Urgulanilla, the first wife of the future emperor Claudius, and another Marcus Plautius Silvanus, the suspect in a notorious murder case.
[1] Taylor is doubtful that Urgulania became friends with Livia prior to her son's marriage to Lartia, but concurs with Ronald Syme that her influence led to his consulship.
He relates how in AD 16 Lucius Calpurnius Piso the Augur, disgusted with "the corruption of the courts, the bribery of the judges, the cruel threats of accusations from hired orators" sued Urgulania.
Tacitus recounts a second trial where Urgulania was called as a witness; she demanded that the praetor take her deposition in her own home, rather than have her attend the court.
The fasti of Trebula Suffenas, where the Plautii Silvani had their ancestral home, tells of Urgulania celebrating Livia's birthday in AD 24 by sponsoring a banquet for the decuriones and Augustales and a gladiator show for the common people.