Overview
Cleopatra I Syra (Greek: Κλεοπάτρα ἡ Σύρα; c. 204 – 176 BC) was a princess of the Seleucid Empire, Queen of Ptolemaic Egypt by marriage to Ptolemy V of Egypt, and regent of Egypt during the minority of their son, Ptolemy VI, from her husband's death in 180 BC until her own death in 176 BC.
Life
Cleopatra I was the daughter of Antiochus III the Great, King of the Seleucid Empire, and Queen Laodice III.
Queen
In 197 BC, Antiochus III had captured a number of cities in Asia Minor previously under the control of the Ptolemaic Kingdom of Egypt. The Romans supported the Egyptian interests, when they negotiated with the Seleucid king in Lysimachia in 196 BC. In response, Antiochus III indicated his willingness to make peace with Ptolemy V and to have his daughter Cleopatra I marry Ptolemy V. They were betrothed in 195 BC and their marriage took place in 193 BC in Raphia. At that time Ptolemy V was about 16 years and Cleopatra I about 10 years old. Later on, Egypt's Ptolemaic kings were to argue that Cleopatra I had received Coele-Syria as her dowry and, therefore, this territory again belonged to Egypt. It is not clear if this was the case. However, in practice, Coele-Syria remained a Seleucid possession after the Battle of Panium in 198 BC.
In Alexandria, Cleopatra I was referred to as the Syrian. As part of the Ptolemaic cult she was honoured with her husband as Theoi Epiphaneis. In line with ancient Egyptian tradition of sibling marriage, she was also named sister (, adelphḗ) of Ptolemy V. A synod of priests held at Memphis in 185 BC granted Cleopatra all the honours that had been given to Ptolemy V in 196 BC (inscribed on the bilingual Greek-Egyptian Rosetta stone).
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