I stumbled across brew.clients.ch/guilcaughusa.htm#Guilcaugh

and brew.clients.ch/brewguilcaugh.htm#Guilcaugh

And books.google.com/books?id=5sVq7VQlNwcC&lpg=PA437&ots=hQjKaCryQj&dq=macvriw&pg=PA438#v=onepage&q=macvriw&f=true

I was wondering if anyone had a primary source for the existence of Muldonny McVriw or how I would go about proving him in a family tree.

I see the first two links are similar. The second states it comes from the research of the late James A Brew who I've heard had done an incredible amount of work. Does anyone know if his researched has survived? And who I could contact about it?