I have a copy of an old book called THE HISTORY OF MISCOU AND SHIPPEGAN by William Francis Ganong, first printed in 1906. I have never really read the book but after seeing your post, I had a quick look through it. There is an old map of Miscou Island and it shows many names of tracts of land which was given to some settlers and I saw the name 'WILSON' in two areas. One name that has come up a few times was one ANDREW WILSON. When I get some time, I'll have a closer look through the book and see if there are any other references re: WILSON.
I also have another book by the same author called THE HISTORY OF CARAQUET AND POKEMOUCHE.
Pat in Ottawa