Two years before Percy Jackson was born, Poseidon had a daughter. However, Sally Jackson didn’t think she’d be able to love and care for a child, Poseidon wanted nothing to do with a daughter his lover didn’t care for, so he went up to Mount Olympus and sought mercy for his betrayal, while stating he did not want this child. Hera, Zues’ wife and sister, took pity upon this girl, Hercules having moved out, she decided to raise the girl, calling her Callianeira Heraia Jackson, the girl however went by Hera to honour her adoptive mother, only one person calling her otherwise, Hera. Her adoptive mother called her Calls. When she reached of age, she would go down to Camp half blood, being quite popular with the other kids, comforting the youngest of them. Poseidon visited her for a while, tried to make amends but when Percy arrives, he wants nothing to do with her.