Secondly, Julia I, daughter of Augustus, no issue.
Drusus I married Antonia II, issue Germanicus, Claudius, Livilla. Germanicus married Agrippina I, daughter of Julia I, granddaughter of Augustus and M. Vipsanius Agrippa; issue Nero I, Drusus III, Caius (Caligula) Agrippina II, Drusilla, Julia Livilla who married M. Vinicius, the friend of Paterculus.
These are the six children whose claims to represent the true Julian stock were so vehemently asserted by their mother, Agrippina I. They derived their Julian blood from Octavia, through their grandmother Antonia II, on the father’s side, and from Augustus through their grandmother, Julia I, on the mother’s side.
MARCUS VIPSANIUS AGRIPPA
married
I. Pomponia, issue Vipsania the first wife of Tiberius, she was thus the mother of Drusus II; after her divorce from Tiberius she married Caius Asinius Gallus.
II. Marcella I, sister to “tu Marcellus eris,” daughter of Octavia by her first husband, no issue; after her divorce she married Julius Antonius.
III. Julia I, daughter of Augustus, and his only child; issue Caius Cæsar, Lucius Cæsar, Julia II, Agrippina I, Agrippa Postumus; on the death of Agrippa, Julia I married Tiberius, she was afterwards divorced and banished on account of misconduct, which appears to have been political, at least as much as it was adulterous.
Caius Cæsar died without issue.
Lucius Cæsar died without issue.
(After being regarded as the probable heirs of Augustus.)