thumb|upright=0.75|An Egyptian portrait of a Ptolemaic queen, possibly Cleopatra, , located in the Brooklyn Museum Caesarion, Cleopatra's alleged child with Caesar, was born sometime in 47, possibly on 23 June 47 BC if stele at the Serapeum of Saqqara that mentions "King Caesar" refers to him.For further information and validation, see and ; for date being disputed, see . Perhaps owing to his still childless marriage with Calpurnia, Caesar remained publicly silent about Caesarion (but perhaps accepted his parentage in private). writes the following about Caesar and his parentage of Caesarion: "The matter of parentage became so tangled in the propaganda war between Antonius and Octavian in the late 30s B.C.—it was essential for one side to prove and the other to reject Caesar's role—that it is impossible today to determine Caesar's actual response. The extant information is almost contradictory: it was said that Caesar denied parentage in his will but acknowledged it privately and allowed the use of the name Caesarion. Caesar's associate C. Oppius even wrote a pamphlet proving that Caesarion was not Caesar's child, and C. Helvius Cinna—the poet who was killed by rioters after Antonius' funeral oration—was prepared in 44 B.C. to introduce legislation to allow Caesar to marry as many wives as he wished for the purpose of having children. Although much of this talk was generated after Caesar's death, it seems that he wished to be as quiet as possible about the child but had to contend with Cleopatra's repeated assertions." Cleopatra, on the other hand, made repeated official declarations about Caesarion's parentage, naming Caesar as the father.
thumb|upright=0.75|An Egyptian portrait of a Ptolemaic queen, possibly Cleopatra, , located in the Brooklyn Museum Caesarion, Cleopatra's alleged child with Caesar, was born sometime in 47, possibly on 23 June 47 BC if stele at the Serapeum of Saqqara: that mentions "King Caesar" refers to him.For further information and validation, see and ; for date being disputed, see . Perhaps owing to his still childless marriage with Calpurnia, Caesar remained publicly silent about Caesarion (but perhaps accepted his parentage in private). writes the following about Caesar and his parentage of Caesarion: "The matter of parentage became so tangled in the propaganda war between Antonius and Octavian in the late 30s B.C.—it was essential for one side to prove and the other to reject Caesar's role—that it is impossible today to determine Caesar's actual response. The extant information is almost contradictory it was said that Caesar denied parentage in his will but acknowledged it privately and allowed the use of the name Caesarion. Caesar's associate C. Oppius even wrote a pamphlet proving that Caesarion was not Caesar's child, and C. Helvius Cinna—the poet who was killed by rioters after Antonius' funeral oration—was prepared in 44 B.C. to introduce legislation to allow Caesar to marry as many wives as he wished for the purpose of having children. Although much of this talk was generated after Caesar's death, it seems that he wished to be as quiet as possible about the child but had to contend with Cleopatra's repeated assertions." Cleopatra, on the other hand, made repeated official declarations about Caesarion's parentage, naming Caesar as the father.