How did Cleopatra's children die?

Cleopatra's oldest son was killed when Octavian took over Egypt. Some writers assume that Octavian had him killed, while others believe that he could have been killed while trying to escape to India. At any rate, he was killed. Cleo's daughter died a natural death. It is assumed that her remaining sons also died a natural death. The last time they were mentioned by the ancient writer, Seutonius, he said that they were raised by Octavia and "educated according to their station." This means that they did not die as you cannot educate a dead child. They more than likely died of natural causes after living a quiet life out of the public eye.