Julia Livilla Agrippina) to overthrow Caligula and to replace him by his brother-in-law Marcus Aemilius Lepidus (Drusilla's widower, but also lover of Agrippina and Livilla). Livilla and her sister Agrippina the Younger were banished to the Pontine Islands (they were most likely separated in their exile and each one sent to a different island). After the deaths of Caligula, his fourth wife Milonia Caesonia, and their daughter Julia Drusilla, she returned from exile on the orders of the new emperor, Livilla's paternal uncle Claudius. Later in 41, she fell out of favour with Messalina (Claudius's third wife) and was charged by her
Roman emperor not recognize him as "Basileus" of the Romans, however, which was a title that he reserved for himself. This line of Roman emperors was actually generally Germanic rather than Roman, but maintained their Roman-ness as a matter of principle. These emperors used a variety of titles (most frequently ""Imperator Augustus"") before finally settling on "Imperator Romanus Electus" ("Elected Roman Emperor"). Historians customarily assign them the title "Holy Roman Emperor", which has a basis in actual historical usage, and treat their "Holy Roman Empire" as a separate institution. To Latin Catholics of the time, the Pope was the temporal authority as