She Killed Her Three Siblings
The ultimate sibling rivalry! Her first husband/brother ran her out of Egypt when she tried to be the sole ruler. She then teamed up with Julius Caesar, creating a civil war and causing her brother to drown in the River Nile. Later, she married her other younger brother, but it’s believed she had him murdered in a bid to make her son her co-ruler. A few years later, she plotted to have her sister killed as well, who she considered a rival to the throne.