Know Someone From Adam Meaning

(idiomatic) To know or recognise someone at all.

Example: 1938, Graham Greene, Brighton rock‎
  'Who is she, anyway? Interfering . . . pestering . . . you must know.' 'I don't know her from Adam,' the Boy said.
1963, Audrey Lillian Barker, The joy-ride and after
  "Well," he said, "do you know me from Adam?"