Question: The Grandma of Lucius Antonius was the elder sister of which Emperor ?
Sentence (from "Octavia the Younger"): Octavia the Younger (69 BC – 11 BC), also known as Octavia Minor or simply Octavia, was the elder sister of the first Roman Emperor, Augustus (known also as Octavian), the half-sister of Octavia the Elder, and the fourth wife of Mark Antony.
Relevant evidence: Yes