cleopatra's alleged child with caesar was born 23 june 47 bc, as preserved on a stele at the serapeion in memphis. in the stele he was named "pharaoh caesar", but the alexandrians preferred the patronymic caesarion. perhaps owing to his still childless marriage with calpurnia, caesar remained silent about caesarion. there is conflicting evidence that he publicly denied fathering him but privately accepted him as his son. cleopatra, on the other hand, made repeated official declarations about caesarion's parentage, with caesar as the father. she also built a caesareum temple near the harbor of alexandria dedicated to his worship.