Question: Who is Marcus Aemilius Lepidus (Executed 39)'s maternal grandfather?
Sentence (from "Marcus Aemilius Lepidus Minor"): Marcus Aemilius Lepidus the Younger or Marcus Aemilius Lepidus Minor( died 30 BC), was the only child of triumvir Marcus Aemilius Lepidus and his wife Junia Secunda, a half- sister to Brutus the Younger, one of Julius Caesar's assassins.
Relevant evidence: No