Hi Sandy!
Keep adding to your family branches, especially the branch you have been told is the possible connection.
If you get stuck along the way, come back here to the forum and post links or ID numbers so other members can help you. Once you get further back, you should join the Scotland project and take the Tartan trail. It's a self-directed course that will teach you how to research and format Scottish profiles.
Good luck with your research and enjoy your journey into the past!