The mystery of how John and Sarah Elliott were a part of Burlington MM

I have been turning over all the clues that I can think of that have to do with the fact that John and Sarah Elliott were enough a part of Burlington MM to have been given a certificate from  Burlington MM to present at New Garden and Nottingham Lots.  

Here is a blog site that I want to explore:

http://jerseyman-historynowandthen.blogspot.com/2011/08/settlements-of-friends-meetings-in-new.html