Who is Jane Doe? I do not know who she is?

Answer 1

Jane Doe is the typical name assigned to a female whose actual identity is unknown. So when used in this term, there is no actual female who goes by the name of Jane Doe, but this is in fact a placeholder for her actual name, to allow referencing to.

Answer 2

John Doe's wife. Obviously.

Answer 3

she is married to john doe and having an affair with jo bloggs

Answer 4

ʇunɔ ǝɯos who ever thought neone could answer with the words ʞɔnɟ or ɥɔʇıq