derwoodii
Senior Member.
http://ohmygodfacts.com/the-19-most-amazing-facts/2/
I have done the obvious searches and not found any other evidence than it suspected OMG link origin.
Word searching found no support for the word arbor tree or the claim of English law.
I thought arbor was a french word http://www.etymonline.com/index.php?term=arbor
and Tree was Germanic http://www.etymonline.com/index.php?term=tree