Cleopatra as Isis
Cleopatra's alliance with Caesar not only transformed her political fortunes but also reshaped her divine image. After giving birth to their son Caesarion, she increasingly associated herself with Isis, Egypt’s great mother goddess.
Her image drew on centuries of Egyptian and Ptolemaic ideas of sacred kingship. The association between royal women and goddesses stretched back to Egypt's New Kingdom (circa 1550–1070 B.C.). In the Ptolemaic period, queens such as Arsinoë II, Berenice II and Cleopatra III had already been linked with Isis, explains Sally-Ann Ashton in The Last Queens of Egypt: Cleopatra’s Royal House.
"Cleopatra inherited that tradition but embraced it more completely than any of her predecessors, making her identification with Isis central to how she presented herself as Egypt's rightful ruler,” says Sewell-Lasater. “Her innovation was in making that identification especially visible and politically effective during one of the most challenging periods of Ptolemaic rule.”
During ceremonial occasions, Cleopatra appeared in the guise of Isis, wearing the goddess's traditional headdress of cow's horns and a solar disc. She also had coins struck depicting Caesarion as Horus, the son of Isis.
After Caesar's assassination in 44 B.C.—and his subsequent deification by the Roman Senate—Cleopatra drew an even closer parallel with the myth of Isis, who mourned her slain husband, Osiris, while protecting their son, Horus. After elevating Caesarion as her co-ruler, Cleopatra reinforced that imagery through temple reliefs, most notably at the Temple of Dendera, where mother and son appeared together.