The McRaes have a long bio in this Riviere Qui history book. The bio starts on page 281, but do a McRae search in the book and click on the page numbers. The bio says they were from Glengarry, his name John Farquar and strangley on page 185 it says hers was Catherine, nee McDonald.
http://www.ourroots.ca/e/toc.aspx?id=4345 Hope this helps Butch