They do not have any Archibald or Gilbert Mcdonald's or any other variations of that name in this book. I have had some luck with this site you may want to check. It lists several areas in Canada. I have it saved on the search engine page and couldnt tell ya how to get to the home page. You can find the site here:http://search.freefind.com/find.html?oq=mcdonald+%22gilbert%...
I have also had some luck on this site too. He charges for any documents you want and you take a risk because he does not list too much information on the marriages. That site can be found here:http://www.ontariogenealogy.com/uppercanadamarriages.html
He does have a list for the marriage years of the individuals you just have to find what area he has them listing in. Sorry I couldnt help more. I would search through the first address first as it usually lists all the information on the marriages.