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 Vaganova her as teacher. Shortly after her death, on 1 November 1957, the Choreographic College on Rossi Street was renamed in her honor; in 1961, it received the title of "academic" and in 1991 it began to use the name Agrippina Vaganova Academy of Russian Ballet. Agrippina Vaganova Agrippina Yakovlevna Vaganova (; 26 June 1879 – 5 November 1951) was a Russian ballet teacher who developed the Vaganova method – the technique which derived from the teaching methods of the old "Imperial Ballet School" (today the "Vaganova Academy of Russian Ballet") under the "Premier Maître de Ballet" Marius Petipa throughout the