Cleopatra I Syra_

Cleopatra Thea Epiphanes Syra, well known as Cleopatra I or Cleopatra Syra, was a princess of the Seleucid Empire, Queen of Ptolemaic Egypt by marriage to Ptolemy V of Egypt from 193 BC, 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. She is sometimes viewed as co-ruler to her husband and son, however evidence is conflicting.