Arsinoë IV was the youngest daughter of Ptolemy XII Auletes. One of the last members of the Ptolemaic dynasty, she claimed title of Queen of Ptolemaic Egypt and co-rulership with her brother Ptolemy XIII in 48 BC – 47 BC in opposition to her sister or half-sister, Cleopatra VII. For her role in conducting the siege of Alexandria against Cleopatra, Arsinoë was taken as a prisoner of war to Rome by the Roman triumvir Julius Caesar following the defeat of Ptolemy XIII in the Battle of the Nile. Arsinoë was then exiled to the Temple of Artemis at Ephesus in Roman Anatolia, but she was executed there by orders of triumvir Mark Antony in 41 BC at the behest of his lover Cleopatra VII.