I can see if I can help. I have a copy of the Alexander MacRae's "The History of the Clan MacRae", but I have the second edition that was published in 1910. It has additional information that might be helpful. Give me a few days, and I'll see what I can find.
It will be tough because, as I'm sure you know, the author Reverend Alexander McRae often omitted the names and dates of daughters in the genealogy he printed. It's a bit annoying, to say the least.
My grandmother's family is from the Kintail, Ross-shire region of Scotland. My grandmother's great grandparents, Farquhar and Christina McRae came from Kintail. Unfortunately, I have not yet been able to link them to the published genealogy.