Isis (Ast, Aset), unlike her twin sister Nephthys, is one of the most famous goddesses of ancient Egypt. Although it is thought that her worship originated in Africa, was nurtured and refined in Egypt, she was a popular goddess in predynastic times in the Delta area. At the opposite end of Egyptian history, her worship spread through the ancient world by the Greek tourists the Romans conquerors, albeit in a different form with the original myths of the goddess long forgotten. Her fame quickly spread to all corners of the Roman empire. There was even a temple to Isis on the River Themes in Southwark, London!