page_title: Ptolemy XIII Theos Philopator
section_title: Co-ruler of Egypt, inner turmoil
hierarchical_section_title: Ptolemy XIII Theos Philopator / Biography / Co-ruler of Egypt, inner turmoil
caption_attribution_description: English: Bust of Ptolemy XII Auletes (117 BC–51 BC). Marble, 1st century BC. From Egypt. Français&#160;: Buste de Ptolémée XII Aulète (117–51 av. J.-C.). Marbre, Ier siècle av. J.-C. Provenance&#160;: Égypte.
context_page_description: Ptolemy XIII Theos Philopator was one of the last members of the Ptolemaic dynasty of Egypt. He was the son of Ptolemy XII and the brother of and co-ruler with Cleopatra VII. Cleopatra's exit from Egypt caused a civil war to break out between the pharaohs. Ptolemy later ruled jointly with his other sister, Arsinoe IV.
context_section_description: Son of Ptolemy XII (r. 80–58 BC and 55–51 BC), he succeeded his father as pharaoh in the spring of 51 BC as co-ruler of the Ptolemaic Kingdom by his marriage to his older sister Cleopatra (r. 51–30 BC). In October 50 BC, Ptolemy XIII was promoted to senior ruler along with her, although the eunuch Pothinus acted as regent for him.
  In the spring of 48 BC, Ptolemy XIII and Pothinus attempted to depose Cleopatra due to her increasing status as queen. Her face appeared on minted coins, for example, while Ptolemy XIII's name was omitted on official documents. Ptolemy intended to become main ruler, with Pothinus acting as the power behind the throne.
caption: Hellenistic bust of Ptolemy XII, father of Ptolemy XIII; Louvre, Paris
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