There are genealogy books on the MacDonalds of the Clan Ranald - and one I know of that traced the families nicknamed Clan Sheumais and the "Bogainn" MacDonalds - the latter named for the resilient bird that - like the fisherman of these clans - could catch fish in the worst weather. These families settled in and around Judique, NS. They arrived from the Scottish Highlands from Isle of Eigg. The book is called "Fair is the Place".
Here is a link:http://fairistheplace.com
Good luck with your search.