Thank you so much for your response!
I was fortunate to get a copy of the book about fifteen years ago at a bookstore in Alexandria when I was there to do a little research and to go to the Highland Games in August. Donald Simon Fraser told me about the book, and I think Elsie is one of his distant cousins. BUTTERNUTS has been a wealth of information, because Donald the Beaver's daughter, Margery, married Little John McPhee also referenced in the book as are my grandmother's siblings. However, I am having a difficult time tracing those roots to the present time. You are only the second person I have found. The other is on my McPhee side in a similar situation. Our great great grandfathers were brothers and arrived in Lochiel, Glengarry in 1802.
Do you know any more about the MacMillans of 34.7?