I discovered a Manx DNA project at Family Tree DNA the other day, and I'm writing to encourage people to participate. My great-grandmother was a Kewley, and I find there is already one Kewley in the project. If other Kewleys join then it would help answer whether all the Kewleys are related, or whether there are distinct families, and whether they are related to the MacAulays or the Cowleys. I am sure there are similar questions about other surnames. More participants would also answer questions about genetic diversity of an island people. The website is at the following location:
www.manxdna.co.uk