Cleopatra | Biography & Facts | Britannica
Soon after her return to Alexandria, in 44 bce, Cleopatra’s coruler, Ptolemy XIV, died.Cleopatra now ruled with her infant son, Ptolemy XV Caesar. When, at the Battle of Philippi in 42 bce, Caesar’s assassins were routed, Mark Antony became the heir apparent of Caesar’s authority—or so it seemed, for Caesar’s great-nephew and personal heir, Octavian, was but a sickly boy.