Hello Allen, My G-G-grandfather HAMILTON, was born ca 1800 in Scotland. He emigrated to Northern Ireland and married an Irish woman, name unknown. My G-Grandfather, John (William) was born ca 1825, emigrated to America in 1840. Married in Wisconsin, USA in 1858. Since this is my maternal line, I have tested my mt-DNA, but so far have not found any connections. Haven't been able to get any of my male HAMILTON cousins to get tested. Good luck with your search, Ron, Vista, CA, USA