Io, daughter of Inachus, was an Argive priestess of Hera who was turned into a cow as a consequence of her affair with Zeus. After various misadventures, she wound up in Egypt, where she recovered her true form and gave birth to Epaphus. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.