The Grandma of Lucius Antonius was the elder sister of which Emperor ?
Lucius Antonius (grandson of Mark Antony) Lucius Antonius (20 BCE – 25CE) was the eldest son of Iullus Antonius and Claudia Marcella Major. He was the grandson of triumvir Mark Antony and Octavia (sister of Augustus). No other siblings are known, but some epigraphic evidence suggests he had either a sister or a daughter Iulla Antonia. His maternal half-sister was Vipsania Marcella.
Gaius Antonius (brother of Mark Antony) Gaius Antonius (died 42 BC) was the second son of Marcus Antonius Creticus and Julia Antonia, and thus, younger brother of Mark Antony, who was one of the members of the second triumvirate.