text: The Nanny does start roughly back at the note location and goes as far as laytown, betwee Balbriggan and Drogheda. Its been mapped from the coast back to below Duleek and is visible in the imagery. It'll need someone comfortable with relations to map it as it form a lot of townland boundaries. 
  
  These have been mapped VERY roughly so will need improvement for accuracy also. I'm on iD in work so cant complete this, hopefully this info is of use to someone else