http://www.find-our-community.net/region/Europe/Western_Europe/UK/Northern_England/North_Yorkshire_map.htm

I meant to respond to this yesterday, but got distracted. This is the neatest link! Thank you, Sweet WO'N! I especially liked the explanation of the symbolism of the herbs.
I don't think I've ever heard the term Scarborough Warning, but I was still interested to read: This is why a 'Scarborough warning' still means 'without any warning' in today's English. Perhaps this expression is more common in Great Britain than here?
This was another surprise: the lieu d'action of the song . To me, it read as though the writer just suddenly switched to French for these words. Is this another common phrase I have been in ignorance of?