Fool! Don't you see now that I could have poisoned you a hundred times had I been able to live without you.

The oldest source is Strabo who was alive at the time of the event and might even have been in Alexandria. The Ptolemies throughout their dynasty spoke Greek and refused to speak Egyptian which is the reason that Greek as well as Egyptian languages were used on official court documents such as the Rosetta Stone. The relatively small number of ancestors can be seen from the possible ancestry of Cleopatra VII as shown below.

With Antony Cleopatra bore the twins Cleopatra Selene II and Alexander Helios and another son Ptolemy Philadelphus (her unions with her brothers had produced no children. As pharaoh Cleopatra consummated a liaison with Julius Caesar that solidified her grip on the throne. To this day Cleopatra remains a popular figure in Western culture.