Marcella I married first Agrippa, no issue, and then Julius Antonius, son of Marcus Antonius, by his first wife, Fulvia.
Marcella II, her marriage is not mentioned.
II. Marcus Antonius, issue two daughters, Antonia I, Antonia II.
Antonia I married L. Domitius Abenobarbus, and thus became one of the grandmothers of the Emperor Nero.
Antonia II married Drusus I, issue Germanicus, Claudius, who succeeded Caligula as Emperor, Livilla. Germanicus married Agrippina I, Claudius eventually married Agrippina II. Livilla married Drusus II, the son of Tiberius.
MARCUS ANTONIUS
His blood ran in the family through his two daughters, Antonia I and Antonia II; his sons by his first wife, Fulvia, did not marry into the Julian or Claudian families; one of them was put to death as a paramour of Julia I.
TIBERIUS CLAUDIUS NERO
married Livia, issue two sons, Tiberius the Emperor and Drusus I.
Tiberius married first Vipsania, daughter of Agrippa by his first wife, Pomponia, who was daughter of Pomponius Atticus, the banker, and friend of Cicero, issue one son, Drusus II, married Livilla, issue one son, Tiberius, murdered by Caligula.