Question: Who is the maternal grandfather of Gaius Antonius (Brother Of Mark Antony)?
Sentence (from "Julia (mother of Mark Antony)"): Julia (104 – after 39 BC) or Julia Antonia (known from the sources to distinguish her from other Juliae) was a daughter of Lucius Julius Caesar, the consul of 90 BC, and mother of the future triumvir and deputy of Caesar, Mark Antony.
Relevant evidence: Yes