Another member of Agrippina’s family – Caligula was her brother. During his ruling, the Roman law became nothing but an instrument of torture. Given that Joffrey Baratheon of “Game of Thrones” is said to be based on him, you probably won’t be surprised to learn that the Emperor quite enjoyed murder and forcing families to attend their members’ executions. In fact, it’s very likely that Caligula has engaged in the vilest acts you can imagine, so if something seems repulsive to you, he’s probably done it. And that includes sleeping with all of his three sisters at the same time.