Cleopatra and Caesar had a male offspring.
Cleopatra VII Philopator ( Κλεοπάτρα Φιλοπάτωρ 69 -- August 12 , 30 BC ) , known to history simply as Cleopatra , was the last active ruler of Ptolemaic Egypt , briefly survived as pharaoh by her son Caesarion . She later elevated Caesarion , her son with Caesar , to co-ruler in name . After Caesar 's assassination in 44 BC , she aligned with Mark Antony in opposition to Caesar 's legal heir Gaius Julius Caesar Octavianus ( later known as Augustus ) .