Caesarion

Ptolemy XV Philopator Philometor Caesar, nicknamed Caesarion (little Caesar) Greek: Πτολεμαίος ΙΕ' Φιλοπάτωρ Φιλομήτωρ Καίσαρ, Καισαρίων (June 23, 47 BC – August,  30 BC) was the last king of the Ptolemaic dynasty of Egypt, who reigned, as a child, jointly with his mother, Cleopatra VII of Egypt from  September 2, 44 BC to August, 30 BC, when he was killed by Octavian, who would become the Roman emperor Augustus.
See more at Wikipedia.org...