Incest of unequal gravity: the "incestus iuris gentium," which was applied to both Romans and non-Romans in the Empire, and the "incestus iuris civilis," which concerned only Roman citizens. Therefore, for example, an Egyptian could marry an aunt, but a Roman could not. Despite the act of incest being unacceptable within the Roman Empire, Roman Emperor Caligula is rumored to have had sexual relationships with all three of his sisters (Julia Livilla, Drusilla, and Agrippina the Younger). Emperor Claudius, after executing his previous wife, married his brother's daughter Agrippina the Younger, and changed the law to allow an otherwise illegal union.
Agrippina the Elder to describe Agrippina. His comments are echoed by other sources. Historian Lindsay Powell says Agrippina enjoyed a normal marriage and continued to show her devotion to Germanicus after his death. He says she was regarded by the Roman people as, quoting Tacitus, "the glory of the country, the sole surviving offspring of Augustus, the solitary example of the good old times." Alston cautions against accepting the stories of Agrippina's feud with Sejanus at face value, as these accounts reflect a tradition hostile to Tiberius and Sejnaus. They may have been circulated by Agrippina's supporters or they may have emerged after