Ptolemy XIV ( , '' Ptolemaĩos '' , who lived 60 BC/59 BC – 44 BC and reigned 47 BC – 44 BC ) , was a son of Ptolemy XII of Egypt and one of the last members of the Ptolemaic dynasty of Egypt . Following the death of his older brother Ptolemy XIII of Egypt on January 13 , 47 BC , he was proclaimed Pharaoh and co-ruler by their older sister and remaining Pharaoh , Cleopatra VII of Egypt . He and Cleopatra were married , but Cleopatra continued to act as lover of Roman dictator Julius Caesar . Ptolemy is considered to have reigned in name only , with Cleopatra keeping actual authority . On March 15 , 44 BC Caesar was murdered in Rome by a group of conspirators whose most notable members were Marcus Junius Brutus and Gaius Cassius Longinus . Ptolemy soon followed him in death . An inscription mentioning him as alive was dated at July 26 , 44 BC . It has been assumed but remains uncertain that Cleopatra poisoned her co-ruler , with aconite , to replace him with his nephew Ptolemy XV Caesarion , her son by Caesar who was proclaimed co-ruler on September 2 , 44 BC and whom his mother intended to support as successor of his father
murdered
Assassination of Julius Caesar
Ptolemy XIV of Egypt