Great Information!
Thanks for the Lenape information site. I am researching this very subject right now and was actually wondering the same thing. Serendipity first thing in the morning!
Jim: As far as the Jersey Devil, I think that you might have something there. I recently purchased a book called Tales of the Jersey Devil, by Geoffrey Girard, and even though most of the tales and subject matter take place beginning in 1735, he does state in his intro that "many believe that the monster is more than a myth; that is it an actual creature like the Northwest's Big Foot or Scotland's Loch Ness Monster; and that it still roams the woods daring to be found." Sounds like perhaps the concept might be even older, but I think more research on Native American lore in New Jersey would be necessary.
In any event, the book is a fun read. Happy researching!
Take good care...