The Butler/Powell Look To The Past

We are researching several families. The Butlers from Scarborough County in Ontario, Canada. The Powells from Cape Breton area of Nova Scotia, Canada. They were in Little Harbour in 1812. The Stewart family in Galashiels, Scotland. The family of Olaf Koyaan in Norway and the date of his imigration to the United States in the early 1800's. We will add to this as we find some of our answers.
Any information would be useful. I am also willing to share anything of use to others.