Claim: Cleopatra had a son with Caesar.

Ptolemy XV Philopator Philometor Caesar -LRB- -LSB- Πτολεμαῖος ΙΕʹ Φιλοπάτωρ Φιλομήτωρ Καῖσαρ , links = no -RSB- , Ptolemaios IEʹ Philopatōr Philomētōr Kaisar ; -LSB- Ptolemaeus XV Philopator Philomētor Caesar , links = no -RSB- June 23 , 47 BC -- August 23 , 30 BC -RRB- , better known by the nicknames Caesarion -LRB- -LSB- sᵻˈzɛəriən -RSB- English : Little Caesar ; -LSB- Caesariō , links = no -RSB- -RRB- and Ptolemy Caesar -LRB- -LSB- ˈtɒlᵻmi_ˈsiːzər -RSB- -LSB- Πτολεμαῖος Καῖσαρ , links = no -RSB- , Ptolemaios Kaisar ; -LSB- Ptolemaeus Caesar , links = no -RSB- -RRB- , was the last Pharaoh of Egypt . He was the final member of the Ptolemaic dynasty of Egypt , who reigned jointly with his mother Cleopatra VII of Egypt , from September 2 , 44 BC . He held the position of sole ruler between the death of Cleopatra , on August 12 , 30 BC , up to August 23 , 30 BC , the time his death was ordered by Octavian , who would become the Roman emperor Augustus . It is unknown whether Octavian 's order was carried out successfully . He was the eldest son of Cleopatra VII , and possibly the only biological son of Julius Caesar , after whom he was named .