Who or What is Jane Doe - John Doe?

Names used to refer to someone with unknown identity. For example, woman is discovered dead with no ID and no one can identify- she's referred to as a Jane Doe. Man is in a car accident, brought in to the hospital unconscious with no ID- he's referred to as a John Doe.

Unidentified female called Jane Doe. Male is John Doe.

Unknown person

Someone who can't be identified