One of the first really good leads I had on my journey to trace back the Jamisons was a fabulous post by Nevin Taggart in his blog NALIL (North Antrim Local Interest List), a local history, culture and genealogy site with a wealth of fantastic info. The post is here: Jamisons of the Giant’s Causeway.
NALIL is a great place to start your own search for all things North Antrim, or just for a great read!
Many thanks to Nevin