GURPS Supers: Empire City
Jane Doe was one of many foundlings found after the Thanatos disaster. They weren’t able to find her parents among the dead or injured. There was no surviving trace of her birth. So she became Jane Doe with a birthdate the day she was found.
The police officer that found her took her in and his family formally adopted her. She never doubted that she was loved or that her parents and adopted siblings loved her, but she longs to know who she really is.
When she was fifteen, she found that by saying that name of a historical warrior woman, she became an amazonian hero: